MTL - I Have a Random New System Daily - Chapter 14 Facial cleanser

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

What got summoned was the world’s strongest sociopath.

[+18 Novel]Highschool fantasies? Taboos? Blackmail? Neighbors? Twins?Come and witness it all.Max, a fat fuck tech genius was transmigrated to a parallel world similar to earth but not earth, after having regretted not living his youth to the fullest while spending his time as an adult cupped on the desk all day long.Reincarnated in the body of a dead fifteen year old, also Max. A year later, he successfully activated the Taboo System that came to this world with him. And began receiving all sorts of Taboo Tasks within the school premises in order to fulfill his Taboo Quest: SSS Ranked Taboo Student.A school with hierarchy, filled with rich scions from all over the world, and world class teachers. What could really be going on beneath the surfaces.CONGRATULATIONS![Taboo System Activated][---- 100%][SSS- A lonely loser lifestyle without being a loser. Accomplished.]Ding![Taboo Task][Target: Sophia]Growing from a fat decrepit loser in just a year, he went from being a nobody to a world class student while being the bane of every lady he encounters.

She killed his wife, destroyed his reputation, and ran off with his son. 8 years later, she returned home with her genius son, who already had a fiancée. “Give me the child, or you can’t afford the price.”“A girl who eats meat and vegetables doesn’t suffer, if you want a child, find yourself a woman to give you one.”