Crimson Dragon Emperor and Crimson Eyed Knight

I was dead... I know the moment that truck hit me I was dead.. But what I don't expect is to born again in the world where Devil and Angel exist! And I'm twin brother of WHO? Why the hell I stuck n this situaton anyway! OC self insert, Bad grammar, OCxHarem IsexHarem. Slight crossover with Naruto and other element. Rating M just in case