Isekai Multiverse: The Path of Deliverance Beyond Finality

Aizen Yamamoto, a middle-aged man who lives in Japan with his wife and two newborn kids. He was living normally and happily with his family and had a decent job until an insignificant incident occurred in his hometown, destroying the city and killing half of the civilians in the incident. His wife and his kids are safe because he sacrifices his life. However, instead of being sent into Heaven or even Hell. He gets a second chance to become Kevin Kaslana with all his power and arsenals. How will he save the corrupted Universes? Can he change the fate of the story for a better one? . . . . . . All characters besides my Oc are belong to their respective creators.