Death's Hidden Mobile

Xia Yan is transported to the world of Bleach and becomes an eleven-year-old boy. He is rescued by Abarai and Rukia in the Inugami Ward and attends the Shinigami Academy, where he is classmates with Hinamori Momo.
He was an outstanding student at the Shinigami Academy, sought after by various squads, but ultimately joined the First Division of the Onmitsukido, the Execution Division.
He wanted to use executions to kill everyone who tried to threaten the Seireitei, in order to protect the people he loved.
Zanpakuto: Lightning type