MTL - Immortal Sword Master - Chapter 81 In crisis

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates

Revisit the peak of the Olympian lore.... An eighty year old scholar who has been a fan of Greek mythology since childhood finds himself reborn as the titular ruler of the underworld, the death god Hades after a tragic death. But the gods of Olympus are very much different from what the stories say. He will have to navigate through his new life as a god and prevent a coming calamity... All while not getting caught... How does it feel to be a god in Olympus? A tale into the heart of myths.

In a world teeming with Titans, Colossals, Gigantic Monsters and Kaiju's, Erian who reincarnated makes his living collecting scraps of low-grade Defective Genetic Serum, realised he transmigrated along with his system.

Follow Erian as he grows to become the strongest Disaster Grade Titan with the help of his Titan System!

The happiest thing in the world is to be able to amend what you have done wrong. She who acted willfully because of a game, was reincarnated into a time when she still had her parents’ love.