1girl, ahoge, aqua_necktie, balancing, ball, black_skirt, blue_archive, blue_eyes, chest_harness, collared_shirt, exercise_ball, fang, full_body, hair_flaps, halo, harness, heterochromia, hoshino_(blue_archive), kneehighs, long_hair, long_sleeves, looking_to_the_side, loose_necktie, lying, necktie, on_back, on_ball, open_mouth, pink_hair, satsuyo, shirt, shirt_tucked_in, shoes, simple_background, skirt, socks, solo, sweatdrop, white_background, white_shirt, white_socks, yellow_eyes