1girl arm_behind_back artist_name bangs black_hair blue_bow blue_sailor_collar bow bowtie brown_eyes closed_mouth collarbone dated eyebrows_visible_through_hair feet_out_of_frame gradient gradient_background grey_background highres himeragi_yukina kepico kneehighs leaning_forward long_hair looking_at_viewer plaid plaid_skirt playing_with_own_hair pleated_skirt saikai_academy_uniform sailor_collar school_uniform serafuku shirt short_sleeves skirt smile solo strike_the_blood white_shirt  1girl bare_shoulders belt black_belt black_choker black_skirt blue_eyes blush breasts choker commentary_request crop_top cross_print date_a_live hair_ornament hairclip hand_on_own_head hand_up highres kepico looking_at_viewer medium_breasts medium_hair medium_skirt midriff navel off-shoulder_shirt off_shoulder pleated_skirt shirt short_hair silver_hair skirt smile solo thigh_strap tobiichi_origami white_hair white_shirt