kuroboshi kouhaku, arknights, official art, third-party source, 1girl, ball and chain (weapon), bare legs, belt, black belt, black gloves, black hair, black jacket, blunt bangs, blush, cloak, closed mouth, expressionless, fish girl, floating cape, full body, gloves, holding, holding staff, holding weapon, hood, hood up, jacket, legs apart, looking at viewer, low-tied sidelocks, multicolored hair, nishikiori sarasa (arknights), outstretched arm, purple eyes, purple hair, red cloak, red hood, shoes, sidelocks, simple background, sneakers, solo, staff, standing, streaked hair, tachi-e, transparent background, two-sided cloak, two-sided fabric, weapon