this is about a 26 yr old guy who been step on though out his life and always the first to apoligies after a small misunderstanding and after being push into the train tracks by somone he finds him self 12 yr in the past he thinks its his life flashing before his eye but after the day end he was back in th future he realizes he can change the past throught his new power after that day he try to stop the girl he loves from dieing in the future but he can only go back 12yrs so he try stop gangs from clashing and tragaties happen that will cause the girl he love to die even tho he trys his best every time he goes back to the future and the love of his life keeps dieing he promises him self that he will never give up till she safe . there are already 3 seasons out and i know there makeing the 4th rn but they didnt say when it will be out ive already watched all of them and each season is so good i cryed watching all of them and i bet u will too i hope u engjoy the anime just as much as i didnt and also the 3rd season is only in sub disney said there not going to dub it so they minght not dub the 4th too i watch anime in dub so that really piss me off but i still watched the 3rd season and will also watch the 4th in sub if its not dubed