6+boys 6+girls :d alternate_costume bangs black_hair blunt_bangs brother_and_sister brown_hair busou_renkin busujima_hanaka captain_bravo cloak daihama_masashi everyone green_eyes hayasaka_ouka hayasaka_shusui hiwatari_sekima hood hooded_cloak japanese_clothes kawai_saori kimono long_hair long_sleeves looking_at_viewer multiple_boys multiple_girls mutou_kazuki mutou_mahiro nakamura_gouta okakura_hideyuki oni open_mouth papillon playing_games purple_hair rokumasu_kouji short_hair siblings smile spiky_hair surprised tsumura_tokiko twins wide_hips yukata ywaka  blue_hair breasts brown_eyes brown_hair busou_renkin cleavage disc_cover green_eyes highres kawai_saori long_hair glasses multiple_girls muto_mahiro mutou_mahiro smile swimsuit swimsuit tsumura_tokiko wakamiya_chisato yellow_eyes