1boy, 1girl, bald, bed, black_shirt, blue_archive, blush, breasts, closed_eyes, faceless, faceless_male, halo, hetero, highres, kiss, large_breasts, leg_lock, lying, medium_hair, missionary, official_alternate_costume, on_back, on_bed, sex, shengtian, shirt, short_sleeves, shorts, shorts_around_one_leg, thighs, yuuka_(blue_archive), yuuka_(track)_(blue_archive)