The Enigma Switch

Paul is a "normal" History teacher at a public school in Manila. His life changes however when he sees a weird tree and saves a child? Everything then stops, and now he has a mission to fix this enigma. But wait, he is the enigma, a puzzle piece that completes two completely different puzzles. A consciousness that can fit in two completely different bodies in completely different timelines. To fix this, he needs to exist in this "other body" of his with the help of a mysterious system. He needs to become...wait What?! Lapu-lapu?!