follows Keyaru, a healing magician who is abused and exploited by others due to his power. After realizing healing magic's true potential and being pushed to his breaking point, he uses the Philosopher's Stone to travel back in time by four years, vowing to take revenge on his abusers and dismantle the corrupt empire that allowed his suffering. and there is where magic-less young man name mash burnedead who can use his immense strength and has a an Mark on his left side of his face. He can help keyaru to get revenge by travel back in time together just mash to see keyaru suffer who tortured or rape him. (And yes he is only wearing an Easton uniform only on the battlefield and adventure also) (spoilers for anime watchers I should use some manga version of mashle in this story)