2boys blue_eyes book chalk chalkboard equation facial_hair fate/grand_order fate_(series) glasses grey_hair grey_sweater holding holding_chalk james_moriarty_(archer)_(fate) james_moriarty_(ruler)_(fate) looking_at_viewer multiple_boys mustache old old_man ou_syoku7 pants scar scar_across_eye smile sweater turtleneck turtleneck_sweater  1girl absurdres agnes_tachyon_(umamusume) ahoge animal_ears black_shirt brown_hair calculus chemical_structure commentary_request dark_background earrings equation eye_trail hair_between_eyes highres horse_ears horse_girl jewelry lab_coat light_trail looking_at_viewer math open_mouth physics red_eyes ruisuke shirt short_hair single_earring sleeves_past_fingers sleeves_past_wrists smile solo teeth umamusume upper_body upper_teeth_only  1girl :d arm_at_side bespectacled black_headwear blush bow buttons chalkboard comiket_103 commentary_request cover cover_page cowboy_shot diamond_button double-parted_bangs doujin_cover english_text equation eyelashes frilled_shirt_collar frilled_sleeves frills glasses green_eyes green_hair green_skirt hair_between_eyes hand_up hat hat_bow heart heart_of_string highres huge_bow index_finger_raised komeiji_koishi long_sleeves looking_at_viewer math medium_hair open_mouth parody red-framed_eyewear semi-rimless_eyewear shirt siw0n skirt smile solo sparkle standing touhou translated wide-eyed wide_sleeves yellow_bow yellow_shirt  bespectacled black_eyes board_eraser book book_stack chalk chalkboard commentary_request crumpled_paper cup equation glasses holding holding_pencil indoors kirby kirby_(series) ladder lying math mug no_humans on_stomach open_book paper pencil round_eyewear satojoyu set_square solid_oval_eyes solo writing  ... 2girls aged_down ahoge animal_ear_fluff animal_ears arknights black_nails black_shirt blonde_hair blue_eyes book brown_hairband brown_jacket cardigan chibi chibi_inset chinese_commentary closed_mouth commentary_request cropped_torso dog_ears dog_girl equation expressionless eye_contact fingernails from_side grey_hair hair_between_eyes hair_flowing_over hair_ornament hairband hairclip hand_in_another's_hair hands_up highres holding holding_book jacket jewelry kaleka kristen_(arknights) lappland_(arknights) light_smile long_hair long_sleeves looking_at_another looking_down looking_to_the_side looking_up messy_hair multiple_girls nail_polish necklace notice_lines open_cardigan open_clothes pale_color pale_skin profile red_cardigan scar scar_across_eye scar_on_face shirt simple_background speech_bubble spoken_clothes spoken_ellipsis sunglasses turtleneck turtleneck_shirt upper_body very_long_hair wavy_hair white_background wolf_ears wolf_girl  closed_eyes commentary doradorakingyo emphasis_lines equation kirby kirby_(series) kirby_64 math no_humans open_mouth power-up simple_background solo star_(symbol) twitter_username white_background  1boy 1other aak_(arknights) animal_ears arknights arrow_(symbol) bag black_gloves black_hair blue_jacket book bottle chalkboard coat commentary_request doctor_(arknights) equation facing_away fingerless_gloves gloves holding holding_pen hood hooded_jacket indoors jacket lab_coat long_sleeves map nishi_juuji paper pawpads pen short_hair table tail white_coat white_gloves writing  1boy absurdres armored_gloves binary black_collar black_gloves blonde_hair blue_eyes blue_horns chinese_commentary collar collared_jacket commentary cyberspace different_reflection equation fake_horns gloves green_eyes hair_between_eyes hand_on_mirror head_tilt highres horns jacket lee:_entropy_(punishing:_gray_raven) lee:_hyperreal_(punishing:_gray_raven) lee:_palefire_(punishing:_gray_raven) lee_(punishing:_gray_raven) letterboxed male_focus multicolored_hair multiple_persona oni_horns outside_border parted_lips portrait punishing:_gray_raven qiu_chengrun reflection reflection_focus short_hair solo streaked_hair  1girl blue_eyes blush_stickers cevio chibi coat commentary curry diamond_hair_ornament english_text equation faoru_ofuton food game_screenshot_inset grey_pupils hair_over_shoulder hand_up hood hood_down hooded_coat index_finger_raised kafu-chan_no_kare_udon_kyousou_kyoku_(cevio) kafu_(cevio) kamitsubaki_studio long_hair long_sleeves low_twintails multicolored_coat multicolored_eyes noodles official_alternate_costume open_mouth orange_coat red_eyes simple_background solo source_quote spoken_symbol translated twintails udon upper_body v-shaped_eyebrows white_background white_coat white_hair  ! <|>_<|> 1girl absurdres artist_name beret black_headwear black_shirt black_wings blue_archive blush content_rating equation flying_sweatdrops hat head_wings highres koharu_(blue_archive) manga_(object) meme peroro_(blue_archive) pink_hair shirt simultaneous_equations sweatdrop tamago_bororo wings  1girl absurdres adjusting_eyewear alternate_costume anniversary bespectacled blue_nails blush breasts brown_eyes brown_hair cevio character_name commentary_request equation glasses grey_shirt hands_up highres kagari-lunatic large_breasts layered_sleeves long_hair long_sleeves looking_at_viewer raised_eyebrows satou_sasara shirt short_over_long_sleeves short_sleeves side_ponytail sideways_glance simple_background solo striped striped_shirt white_background  1girl blue_eyes blue_pants brown_sweater dutch_angle e.g.o_(project_moon) equation faust_(limbus_company) highres limbus_company long_sleeves looking_down lying on_back pants parted_lips project_moon ribbed_sweater shiqicheng short_hair solo sweater turtleneck turtleneck_sweater white_hair  3girls akemi_homura akuma_homura alina_gray black_hair black_hairband black_headwear black_wings blank_eyes blue_eyes blue_hair braid closed_eyes commentary_request emoji emoji_kitchen_(meme) equal_sign equation fly_agaric fusion gilcrows glasses green_hair hair_ornament hairband hat long_hair magia_record:_mahou_shoujo_madoka_magica_gaiden mahou_shoujo_madoka_magica meme miki_sayaka multicolored_hair multiple_girls mushroom official_alternate_costume open_mouth palette_(object) peaked_cap plus_sign red-framed_eyewear red_hairband short_hair smile streaked_hair surprised twin_braids v-shaped_eyebrows violet_eyes wings  :d animal_ears blue_sailor_collar blush cat_ears cat_girl closed_mouth cropped_torso emoji_kitchen_(meme) equal_sign equation fusion hair_between_eyes hoshimi_private_high_school_uniform idoly_pride kemonomimi_mode long_hair meme motion_lines nagase_kotono nazo_neko_(idoly_pride) neckerchief notice_lines omoimochi open_mouth plus_sign purple_hair red_neckerchief sailor_collar school_uniform serafuku shirt smile straight_hair violet_eyes white_shirt  emoji_kitchen_(meme) equal_sign equation fusion gyogyoto-san_(idoly_pride) idoly_pride meme nabe_(idoly_pride) no_humans plum_(arch) plus_sign  1girl absurdres apple aqua_hair aqua_nails bar_graph bracelet chalk chalkboard closed_eyes clothing_cutout dress equation faruzan_(genshin_impact) flower food fruit genshin_impact geometry gr_greeze graph hair_ornament hand_on_own_hip highres jewelry shoulder_cutout sleeveless sleeveless_dress solo teeth twintails upper_teeth_only window wristlet x_hair_ornament  1boy ace_attorney blue_jacket brown_hair clenched_teeth coffee_mug collared_shirt cropped_torso cup equation hiluta jacket lapel_pin lapels male_focus mug multiple_views necktie no_nose phoenix_wright pink_necktie portrait red_background shirt spiky_hair teeth white_background white_shirt wide-eyed  2girls absurdres artist_name bare_shoulders blue_bow blue_gemstone blue_hair blue_headwear blush bow bow-shaped_hair choker closed_mouth english_commentary equation furina_(genshin_impact) gem genshin_impact gradient_hair hair_ornament hat highres jellyfish long_hair looking_at_viewer multicolored_hair multiple_girls open_mouth pink_hair purple_choker purple_hair sangonomiya_kokomi short_hair sidelocks simple_background smile standing teeth top_hat tsukiaki_teriyaki two-tone_hair upper_body violet_eyes white_background  1girl agnes_tachyon_(umamusume) ahoge animal_ears arm_up belt breasts brown_hair chibi chibi_inset epaulettes equation gloves grin guinea_pig hair_between_eyes horse_ears jacket long_sleeves looking_at_viewer microphone orange_eyes road short_hair signature skirt small_breasts smile solo sweat translation_request umamusume upper_body welchino white_gloves white_jacket yellow_skirt  1girl agnes_tachyon_(umamusume) ahoge animal_ears black_background black_necktie black_shirt blush breasts brown_hair closed_mouth coat collared_shirt commentary_request earrings equation film_grain glint hands_up highres horse_ears horse_girl jewelry kangshi korean_commentary lab_coat looking_at_viewer medium_breasts messy_hair mixed-language_commentary necktie open_clothes open_coat rainbow_outline red_eyes shirt short_hair short_necktie single_earring sleeves_past_fingers sleeves_past_wrists smirk solo sweater umamusume upper_body yellow_sweater  1girl black_gloves blank_stare blazer blue_archive blue_necktie blurry blurry_background blush_stickers collared_shirt commentary empty_eyes english_commentary equation fang fingerless_gloves galaxy_background gloves hair_ornament hand_up index_finger_raised jacket koyuki_(blue_archive) long_hair looking_ahead meme_request necktie no_pupils open_clothes open_jacket open_mouth pink_eyes pink_hair popped_collar shirt short_eyebrows siguma_(13238772100) skin_fang smile solo twintails upper_body white_jacket white_shirt  1girl absurdres agnes_tachyon_(umamusume) ahoge animal_ears brown_hair commentary equation hair_between_eyes highres horse_ears horse_girl jw_(p_p_pp_pp) lab_coat looking_at_viewer math open_mouth physics red_eyes running shadow short_hair sleeves_past_fingers sleeves_past_wrists solo sweater_vest teeth umamusume upper_teeth_only very_long_sleeves yellow_sweater_vest  ++_(9oafxjjhuktkdef) 1girl :> @_@ animated animated_gif bare_shoulders blue_ribbon caution_tape chibi chibi_inset closed_mouth collared_dress detached_sleeves dress epilepsy_warning equation error_message flower_knot hand_cursor kotonoha_aoi laughing long_sleeves looking_at_viewer looping_animation messy_hair pixel_art red_eyes ribbon romaji_text sidelocks sleeveless sleeveless_dress solo_focus system_console voiceroid white_dress window_(computing)  2boys asagiri_gen asymmetrical_hair bandaged_arm bandages black_hair blush coat dr._stone equation evil_grin evil_smile gradient_hair green_hair grin highres ishigami_senkuu male_focus multicolored_hair multiple_boys ok_sign purple_coat red_background red_eyes short_hair smile spiky_hair split-color_hair thought_bubble tongue tongue_out two-tone_hair white_hair yam_(redjest)  1girl arawara book clip_studio_paint_(medium) commentary crescent crescent_pin dress equation from_above hat highres holding holding_book long_hair looking_at_viewer mob_cap open_mouth patchouli_knowledge purple_dress purple_hair purple_headwear solo spell_card standing striped striped_dress touhou  4girls aged_up alternate_costume apron black_skirt blue_eyes blue_hair blue_shirt blush book casual chalk chalkboard collared_shirt equation heterochromia horse_girl ikuno_dictus_(umamusume) jacket long_hair long_sleeves matikane_tannhauser_(umamusume) multicolored_clothes multicolored_hair multicolored_jacket multiple_girls nice_nature_(umamusume) office_lady one_eye_closed open_clothes open_jacket orange_hair pencil_skirt purple_jacket red_apron redhead shirt short_hair skirt smile streaked_hair sweater teacher twin_turbo_(umamusume) two-tone_hair two-tone_jacket umamusume violet_eyes white_hair white_jacket white_shirt yellow_sweater yokoji_(kodai2015)  1girl abandoned absurdres aperture_science_handheld_portal_device boots brown_hair character_request chell clip_studio_paint_(medium) commentary english_commentary equation facing_away from_behind full_body glados highres leaf long_fall_boots long_hair looking_away najsigt object_request personality_core photoshop_(medium) plant plant_request portal_(series) portal_2 rubble shirt sleeveless solo space_core standing turret_(portal) wall weighted_companion_cube wheatley wide_shot  1girl absurdres beaker black_bow black_ribbon black_skirt black_thighhighs blurry blurry_foreground blush book bow chalkboard chemistry closed_mouth collared_shirt cupboard dappled_sunlight english_commentary equation feet_out_of_frame hair_bow hanging_light highres holding holding_book indoors long_sleeves looking_at_viewer math medium_hair neck_ribbon original plaid plaid_skirt plant red_vest ribbon school_uniform senri_(senri_sen) shadow shirt sidelocks sitting sitting_on_object skirt smile solo sunlight sweater_vest thigh-highs vest white_hair white_shirt yellow_eyes  1other :< artist_name ayu_(mog) blush book candy cellphone closed_mouth commentary_request english_commentary equation eraser food holding holding_candy holding_food holding_pencil looking_at_viewer math mechanical_pencil mixed-language_commentary notebook original pen pencil phone pov rabbit ruler smartphone solid_circle_eyes translation_request trigonometry watermark  6+girls absurdres akemi_homura all_fours argyle argyle_legwear arms_behind_back black_footwear black_hair black_skirt blood blood_on_clothes boots bow bowtie braid canothy chinese_commentary commentary_request drawing equation from_above graph_paper highres holding holding_marker jacket jewelry juliet_sleeves kaname_madoka loafers long_hair long_sleeves mahou_shoujo_madoka_magica marker math mitakihara_school_uniform multiple_girls multiple_persona neck_ribbon out_of_frame pink_hair plaid plaid_skirt puffy_sleeves purple_skirt red_bow red_bowtie ribbon ring running school_uniform shadow shoes short_hair short_twintails size_difference skirt stain standing surreal thigh-highs thigh_boots twin_braids twintails walking white_thighhighs yellow_jacket  1girl :< blonde_hair blue_eyes border buttons child commentary equation female_child finger_counting forehead kozato_(yu_kozato) little_blonde_girl_(kozato) math original shirt short_sleeves short_twintails sidelocks solo twintails v-shaped_eyebrows white_border  1boy absurdres asymmetrical_arms bb_(baalbuddy) cigarette coffee_mug coomer_(meme) crumpled_paper cup english_text equation greyscale highres math meme monochrome mug original simple_background sitting smoking solo table thinking white_background  3girls alternate_hairstyle animal aqua_hair bangs blonde_hair book book_stack bow chalk chalkboard clipboard curly_hair equation green_eyes hair_bow highres holding holding_clipboard hooves horns horse lamp long_hair math multicolored_hair multiple_girls my_little_pony my_little_pony:_friendship_is_magic necktie no_humans orange_hair pleated_skirt pony ponytail purple_hair school_uniform shirt single_horn sitting skirt socks standing starlight_glimmer streaked_hair sunset_nivaris tail teaching techer thigh-highs twilight_sparkle unicorn violet_eyes xieyanbbb  2girls absurdres animal animal_ears antenna_hair arrow_(symbol) bag balloon barcode bare_shoulders bird black_bag blush brown_eyes chimera claws closed_mouth collar crab_claw creature cross equation extra_arms floating floating_object flying gloves grey_background grey_eyes grey_gloves grey_hair hair_between_eyes hair_ornament hairclip halo highres ice infinity kite_balloon looking_at_viewer math mechanical_arms mechanical_legs mechanical_tail medium_hair minus_sign multicolored_clothes multicolored_gloves multiple_girls navel open_hands open_mouth original oversized_object plus_sign pouch recycling_symbol red_gloves ric_li science_fiction scissors see-through short_hair simple_background smile tail transparent two-tone_gloves weapon white_gloves zipper zipper_pull_tab  1girl absurdres animal arrow_(symbol) barcode barefoot bell bird blue_eyes clouds creature cube english_text equation extra_eyes fish grass grey_hair hatching highres holding holding_bell jellyfish light_particles long_hair looking_at_viewer measurements original parted_lips pause_button replay ric_li scales scribble shark slit_pupils speech_bubble spine standing third_eye_on_chest turtle very_long_hair water  1girl agnes_tachyon_(umamusume) ahoge animal_ears artist_name bangs black_necktie breasts brown_hair confetti equation horse_ears labcoat looking_afar math medium_breasts medium_hair necktie orange_eyes outstretched_arm short_necktie sideways_mouth sleeves_past_fingers sleeves_past_wrists smile solo sparkle sweater teeth test_tube umamusume upper_body welchino yellow_sweater  1girl agnes_tachyon_(umamusume) ahoge animal_ears bangs black_necktie brown_hair clipboard commentary_request cup equation fumiomiomi grey_background highres holding holding_clipboard holding_cup horse_ears horse_girl labcoat long_sleeves medium_hair messy_hair motion_lines necktie partial_commentary physics red_eyes short_necktie sleeves_past_fingers sleeves_past_wrists solo sweater translation_request umamusume yellow_sweater  1girl agnes_tachyon_(umamusume) ahoge animal_ears bangs black_necktie black_pantyhose brown_hair clipboard cup equation fumiomiomi grey_background highres holding holding_clipboard holding_cup horse_ears horse_girl horse_tail labcoat long_sleeves medium_hair messy_hair necktie pantyhose physics red_eyes short_necktie sleeves_past_fingers sleeves_past_wrists solo sweater tail test_tube umamusume yellow_sweater zipper zipper_pull_tab  >o< +_+ 6+girls :3 :d :o :t absurdres alternate_eye_color alternate_hair_color animal_ears awesome_face bangs bell black_bow black_hairband black_headwear blue_hair blue_shirt blunt_bangs blush bow bowtie braid brown_hair cat_ears character_doll closed_eyes closed_mouth collared_shirt commentary cymbals d: dot_nose dress emoji english_commentary english_text equation expression_chart fang food frilled_shirt_collar frills frown fruit fumo_(doll) green_bow green_dress green_eyes grin hair_between_eyes hair_bow hair_ornament hair_over_one_eye hairband harukawa_moe hat hat_bow hat_ribbon heart heart_hair_ornament highres hinanawi_tenshi hitodama instrument kaenbyou_rin kaliningradg keyboard_(instrument) komeiji_koishi komeiji_satori leaf long_hair looking_at_viewer medium_hair meme multiple_girls nagae_iku notice_lines official_art_inset one_eye_covered open_mouth orange_eyes peach peach_hat_ornament photo_inset pink_eyes portrait pout pouty_lips power_item_(touhou) radiation_symbol raised_eyebrow red_bow red_bowtie red_eyes redhead reiuji_utsuho ribbon ribbon_trim roblox sharp_teeth sheet_music shirt sideways_glance smile sound speech_bubble stuffed_animal stuffed_toy sukusuku_hakutaku sweatdrop symbol-shaped_pupils teeth tongue touhou treble_clef twin_braids upper_teeth v-shaped_eyebrows white_shirt windows yellow_ribbon yellow_shirt zun_(artist)  2boys bangs black_hair clothing_cutout cross-eyed equation ginmu glowing glowing_eye greyscale halter_top halterneck hands_on_own_cheeks hands_on_own_face head_rest headband holding holding_paper homework jojo_no_kimyou_na_bouken looking_at_another male_focus math medium_hair messy_hair monochrome mouth_hold multiple_boys narancia_ghirga narrow_waist pannacotta_fugo paper pursed_lips shaded_face spot_color tank_top thick_eyebrows v-shaped_eyebrows vento_aureo violet_eyes wristband