1girl, asta_(honkai:_star_rail), back, back_cutout, bare_shoulders, blue_eyes, braid, breasts, closed_mouth, clothing_cutout, collared_shirt, from_behind, hair_ornament, hand_on_own_neck, honkai:_star_rail, honkai_(series), looking_at_viewer, medium_breasts, pink_hair, shirt, side_ponytail, sideboob, simple_background, sleeveless, sleeveless_shirt, smile, solo, ura_(hamburg_oniku), white_background