The Devil and the Savior Are of Course a Match Made in Heaven

[Double male protagonists + Western fantasy + Nianxia + Dual heroes + Rebirth] Finor Christian, the youngest genius in the history of the Essos continent. He died to save the world. Then he was reborn, 500 years later, in the body of an unknown young man. Feinol: (takes a breath) The son of light who saved the world in the past actually took the body of others and was reborn. Is this a distortion of human nature or a loss of morality? (Finor: It's not that I don't have it) What's even more terrifying is that he has to go to a magic academy to have magical powers. A commoner goes to a magic school full of nobles... He, who is not good at socializing, may become the dislike of everyone in the academy...? ———— It's an imaginary world view, so there will be a lot of private settings. It is not purely campus life, it only occupies a small part. He is not a heartthrob, but many people do like him. There are other male and female colleagues, so there is less space. The attack has tentacles and is a gravity-based weapon. I am very Buddhist, aloof from the world, and have no ambitions. So far I can't think of anything surprising. If there are any, can you remind me and add them?