The Strongest Half Blood

Leraj is a half-vampire half-demon boy who got found in a forest by a couple, humans. He is a kid who is interested in the world and reads many books about everything that the world has to offer. When he turns 10 he is called to a place to determine his powers that everyone gets at the age of 10. But to everyone's suprise he seems to have no powers... Little did they know that he actually does have powers. Advice is always welcome! It's my first book so I guess I'm a beginner at it. So, if you have something to say about it, please do so. English is not my first language. Is the MC op? Takes time but eventually, yes. Is there a harem? No. Romance? Possibly.