This is Diabellstar the black witch - Alt from YU-GI-OH!

Tags (character): diabellstar the black witch, very long hair, black nails,

Tags (clothes): official alternate costume, gold belt, black witch hat, monocle, black long dress, single ball earring, single thighhighs, book stack, black thigh strap, black calf strap, brown heel boots

Tags (object): yellow cat, yc,cat on shoulde, hugging cat, holding cat, brown suitcase, leaning on huge book, pink pyrokinesis,

Tags (other): building, city, castle, night official art, chibi,