Reincarnated as Itsuka Shido: Collecting Spirits as Lovers - Chapter 140: Wagnaria

Solminati Academy is a gathering place for youngsters with dreams, hopes, ambitions, and various thoughts. There was a boy here who entered the school to support his beloved’s dream.

The ill-fated high school student Liu Yuan obtained the inheritance of the top civilization in the universe and changed his own destiny. He also used many powerful technologies in the inheritance to lead the Chinese nation to rise in the universe.

- Description from novelbuddy

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.