1girl, bed_sheet, black_bra, blush, bra, breasts, cleavage, collarbone, hair_ornament, heterochromia, hoshikawa_sara, lifting_covers, looking_at_viewer, lying, mask, mask_pull, medium_breasts, mouth_mask, nijisanji, on_side, print_bra, pulled_by_self, sanada_keisui, tongue, tongue_out, underwear, underwear_only, upper_body, virtual_youtuber, x_hair_ornament