I Am the Nanny of the Villain - Chapter 170:

Polygamy is abolished.

We don’t have to force ourselves to live together anymore…

Warlock of the Magus World, the world full of deceit, bloodshed, betrayal, backstabbing, logical thinking, profit oriented mindset and myriad of phenomenal mysterious entities. In this world a soul is reincarnated and we embark on a journey of a lifetime, as his ups and downs would be written in the annals of history of the whole Magus World.

A decision can destroy the sun, moon and stars. A finger can kill the Heavenly Overlord. While chatting, the Heaven and ten worlds can be annihilated.

A poor little kid walks out from a remote mountain area while holding the Nine Dragons and the Incredible Cauldron. With a control over the time and space eternally, he embarks on the Path to God where he defies the odds of the boundless universe gaudily by fighting against royalty and clashing with the legendary generation.

- Description from Novelupdates

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates