1girl, 2022, ahoge, braid, braided_ponytail, breasts, brown_hair, cleavage, closed_mouth, curtains, gogogo_(gogogorx), hair_over_shoulder, hair_ribbon, hand_on_own_leg, idolmaster, idolmaster_shiny_colors, indoors, kuwayama_chiyuki, large_breasts, long_skirt, long_sleeves, looking_at_viewer, ribbon, sitting, skirt, smile, solo, white_ribbon, wooden_chair