1girl, alternate_costume, black_panties, blue_eyes, blue_panties, breasts, brown_hair, chougei_(kancolle), collarbone, hair_down, japanese_clothes, kantai_collection, kimono, large_breasts, long_hair, looking_at_viewer, lying, navel, obi, on_back, panties, sash, shigatsu_(soratobuusagi), solo, sweat, two-tone_panties, underwear, yukata