He was the one who brought death on the battlefield and defended his country only to be sacrificed by his king. So much regret upon death so he asked the world. Next time, let me live my life for myself. When he woke up, he was no longer himself. He reincarnated into a 14 year old boy who was trapped in a dungeon. Could he be the only human in this world or was there more outside this jail. Join the newly reincarnated Ren Tachean as he clears another battlefield.