Koko wa Ore ni Makasete Saki ni Ike to Itte kara 10 Nen ga Tattara Densetsu ni Natteita

The Hero’s party faced certain doom when a horde of powerful devils ambushed them. In a desperate bid to protect his comrades and the world itself, Rakku—the strongest mage—chose to hold back the enemies within the rift, sacrificing his own life so the others could escape. His fate seemed sealed. But ten years later, a mysterious young man appears… bearing the very same name. Who is he really? A reincarnation? A survivor? Or something far beyond imagination?