The Insane Regressor: Throne of Pride

A mad young genius, burdened with knowledge so dangerous that in the wrong hands it could spell catastrophe, possesses an even more terrifying talent known as Absolute Focus — a gift that allows him to master any path he chooses to walk. One day, with nothing left to lose, he decides to throw himself into the unknown. But whether by fortune or cruel irony, things do not go as expected. Instead of meeting his end, he transmigrates into an entirely new world — a world ruled by soul power and inhabited by countless races, each with their own laws, hierarchies, and secrets. But that is not all... [Sovereign Pride has awakened.] [The target and its Records have been devoured.] [The host has obtained two additional lives.] [When the host dies, he will regress 24 hours into the past — as long as lives remain.] — Description from novelcodex.org