Toshigami Histugaya: The return to the British living wizarding world

"I'm Toshigami Hitsugaya, new lieutenant of squad twelve of Gotei 12 and this is Sirius Black, the new captain of squad twelve-. The shinigami says, he looked to be around 7 years old, with black hair, emerald green eyes, skin pale as snow and a thin scar in the shape of a lightning bolt that started on her forehead and ended on her cheek." "...Harry? Are you...?"