1girl, arms_behind_back, bananafish1111, black_shirt, black_shorts, blue_archive, blush, breasts, closed_eyes, closed_mouth, gym, gym_uniform, halo, indoors, lying, medium_breasts, on_stomach, purple_hair, shirt, short_hair, short_ponytail, short_sleeves, shorts, solo, stretching, v-shaped_eyebrows, yuuka_(blue_archive), yuuka_(track)_(blue_archive)