I'm looking for a japanese Drama about three brothers. The youngest one grew up in some kind of hospital and is somehow a mutant I think. He found out he had brothers in the first episode and started looking for them. They helped him find out what he is and what happened to their mother.

No it's not, but thanks for the reply. I know for sure that they were three brothers.  

Oh wow, I just wanted to look if Yasha was on Youtube and the next drama I saw was the one I was meant! So thank you so much you somehow lead me to the right drama.