This is a crossover story which takes place after Thanos death in movie . Y/N big brother of rias and sirzechs have been keeping snapped by Thanos when he was a child Thanos raised him to be like him but he deep down know that what happened s father is teaching is wrong and he wanted to be a hero but never got the chance . Let's find out about his journey ALL RIGHT BELONGS TO THEIR RESPECTIVE OWNERS.