1boy, 1girl, :d, ahoge, bed sheet, black wings, blanket, blue archive, blush, breasts, cuddling, cup, demon horns, hair between eyes, halo, hand on another's head, hetero, hina (blue archive), hitotose rin, holding, holding cup, horns, long hair, low wings, multiple horns, naked sheet, nipples, open mouth, purple eyes, small breasts, smile, solo focus, steam, under covers, white hair, wings