1girl, ;), ahoge, arms_up, bikini, black_bikini, breasts, brown_hair, cleavage, day, groin, hair_over_shoulder, idolmaster, idolmaster_shiny_colors, kuwayama_chiyuki, looking_at_viewer, navel, one_eye_closed, outdoors, see-through, see-through_cleavage, see-through_shirt, smile, solo, swimsuit, tland_p