The Swiftest of Knights

Hiro Shizuki a student at Union Academy he was a descant student but he was powerless his bullies one one day beat him to death but he didn't die even when being stabbed in the heart he miraculously survived Hiro noticed he had a very high healing rate one day he could be on the verge of death and the nexts he's fine.
One day he decided to confess to four girls he had a crush on but was rejected he started distancing himself from others when he was in the library he found a book in the Royal Kights he was fascinated by the book and one night one of the Royal Kights appeared to him saying he was their decadent the knight was Ultraforceveedramon.