Accidental Reverse

Three years after Galaxy, Raimon is in High School. Things have changed and everything's going well until- "DAMNIT YOU STUPID RABBIT!" -Fei accidentaly sends Tenma to the past (and gets him stuck in his younger body)! The worst? He now has to go through everything AGAIN! What does Tenma do? He messes with everyone by using his future knowledge, of course! - Rewrite of the series!