The Secret Immortal

During the summer break, an unremarkable man named Finn Cole accidentally steps onto an ancient teleportation array and is transported to a world of immortals. He spends a thousand years in this otherworldly realm—though only a single day passes on Earth—emerging as an immortal himself. Upon his return, Finn is still looked down upon by others, as he always has been. Little do they know, he is now a completely transformed being.