Ultimate Spin System: Ero Spin? - Chapter 5 - 0 - Someone’s Wife

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

Transmigrated in erotic game and having a lot of fun. A lot of R-18 chapter.

I was always alone, throughout my life. People looked at me with disdain because I was an orphan without parents. Constant abuse followed me everywhere. I lost touch with how to interact with others.With each passing day, I grew more distant from my emotions until I scarcely recognized myself. The warmth of family and friendship felt foreign to me.In the end, I snapped, and I became what I hated the most... something that wasn't human anymore... something that shouldn't have been born...That was until I was reincarnated as Lucas Nightstar, granted a second chance at a happy life with a loving family. Now, I would do anything to protect them, live my life to the fullest, and was willing to destroy anyone who dares stand in my way of my newfound peace. Yet...Little did I know what fate had in store for me.

Kazura was selected as the winner on a lottery that he bought on a whim and received ¥4,000,000,000 (4 billion yen).