yahata umiri, arknights, bang dream!, bang dream! it's mygo!!!!!, official art, third-party source, 1girl, animal ear fluff, animal ears, black hair, black jacket, black necktie, black shorts, black socks, blue eyes, brown shoes, holding, holding sword, holding weapon, jacket, jacket on shoulders, kneehighs, loafers, medium hair, necktie, shoes, shorts, simple background, socks, solo, sword, tail, transparent background, weapon, wolf ears, wolf girl, wolf tail, yahata umiri (moonlight executioner)