MTL - Returning from the Low-Magic World, I Created My Own Artificial Intelligence - Chapter 497 change restriction

The once greatest Saint underneath the heavens has been reborn after one hundred years. He cultivates with mighty skills, and he fights to once again reach the top of the world!

In a world where money and power trumps all, Ahn Soo Ho, A.K.A. Magician, uses his superhuman abilities and his knowledge of the intelligence world to climb to the very top of the totem pole.

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

He was a wealthy and mysterious financial backer who had appeared before her when she needed money the most. After the courtship, she took the money and left.