The World of Contracted Spirits: the Legend of Isulandi

An ordinary young man named Cain Ishlandi accidentally unlocked the reincarnated soul of an evil god sealed by a colorful crystal stone. Since then, he has embarked on a legendary life of tracking down the real murderer and taking revenge, fulfilling the wishes of his best friends, spending his whole life with the destined person in his past and present life, and protecting the world.