birkai, hiyuki (wuthering waves), wuthering waves, absurdres, commentary, highres, 1girl, alternate costume, bikini, black bikini, black shorts, blush, border, breasts, closed mouth, full body, grey background, grey hair, hair intakes, hair ribbon, hands on own hips, jacket, large breasts, long hair, looking at viewer, navel, navel piercing, off shoulder, open fly, piercing, ponytail, red eyes, red jacket, red ribbon, ribbon, shorts, solo, stomach, swimsuit, tacet mark (wuthering waves), visor cap, white border