1boy, 1girl, 4koma, aketa_mikoto, bath, bathing, bathtub, breasts, comic, greyscale, idolmaster, idolmaster_shiny_colors, kaiyuugyo_(furafura_sunna), long_sleeves, medium_breasts, monochrome, open_clothes, opened_by_self, producer_(idolmaster), short_hair, speech_bubble