1girl absurdres atat250 back_cutout black_dress blue_archive blush breasts butterfly_hair_ornament china_dress chinese_clothes closed_mouth clothing_cutout dress grey_background hair_bun hair_ornament halo highres kisaki_(blue_archive) long_hair looking_at_viewer looking_back pelvic_curtain side_slit simple_background skirt_hold sleeveless sleeveless_dress small_breasts solo sweat twintails very_long_hair