1girl :3 arm_behind_head arm_up armpits bad_id bad_pixiv_id bike_shorts blonde_hair blue_eyes breasts cleavage crop_top gundam gundam_build_fighters gundam_build_fighters_try hair_tie highres hoshino_fumina medium_breasts midriff navel one_eye_closed ponytail shiny_skin smile solo tank_top tesshii_(riza4828)