issa castagno, kamui (kill la kill), matoi ryuuko, kill la kill, highres, 1girl, arms up, ass, ball gag, bdsm, black hair, blue eyes, blush, bondage, bound, breasts, crotch rope, english text, gag, gagged, gluteal fold, large breasts, leg up, life fiber, living clothes, multicolored hair, navel, red background, red hair, revealing clothes, shibari, short hair, simple background, solo focus, split, spread legs, standing, standing on one leg, standing split, stocks, streaked hair, suspenders, two-tone hair, underboob