World Evolution! Awakening Limit Grade Talent!

Aiden Cross, A boy who was smarter than a kid his age. Born on the seemingly normal planet Earth. who finds his life very boring.100 years ago, World War III happened for unknown reasons. Resulting in 25% of the world population perished in this war.What was the reason for all the nation to fight for?Would he uncover the secret of the war? Or will he become a pawn of the powerful organizations?But one day Aiden's life turned upside down in an accident. Aiden lost his mother, and Aiden himself was on the verge of dying. Then he awakened the system.[Ding][Compatible host detected][Initializing the Cosmic System][Connecting the cosmic system to the host's soul][Connection Completed]A system promises to make him stronger and help him revive his mother back to life. And inform him about the awakening of his world, which is no less than the apocalypse. With the help of the system, Aiden awakens Limit Grade Talent, but his talent is not complete and has a fatal side effect.[Talent: Celestial (unknown)] (incomplete)Aiden has to copy many talents to complete his talent. And travel to many different worlds.As he meets different races, a naive elven princess, prideful and lustful dragons, bored vampires, and a horny angel who offers herself to him"I offer you my body and soul; please accept me." An angel with a flushed red face said