1boy, 1girl, @_@, bare_shoulders, bath, bathing, blush, breasts, brown_eyes, brown_hair, cleavage, collarbone, eyebrows_hidden_by_hair, glint, hair_bun, hair_ornament, hand_on_own_chest, idolmaster, idolmaster_shiny_colors, large_breasts, long_hair, mixed-sex_bathing, naked_towel, onsen, open_mouth, pepeo, shared_bathing, sparkle, steam, towel, tsukioka_kogane, wet