1girl, blush, convenient_censoring, floor, greyscale, hair_between_eyes, hair_ornament, hair_over_shoulder, hairclip, laughing, long_hair, looking_at_viewer, love_live!, love_live!_sunshine!!, marugoshi_teppei, monochrome, open_mouth, outstretched_arms, panties, panty_peek, pov, sakurauchi_riko, school_uniform, serafuku, smile, solo, squatting, teeth, underwear, unfinished, upper_teeth_only, upskirt, uranohoshi_school_uniform, white_background