Who is Gravin fire bones? And his story?

He is a young demon born with his real parents. But he can’t remember because their parents put him in adoption at his 1st birthday.
His mommy had that idea not because she is evil, because there was too many stealers . They go secretly to the castle to kidnap the baby to posses his fire energy (yeah he is born with it.) His mother did it because she wanted that Gravin have a normal and happy life and He will go home when he’ll be ready. A little girl  saw a little baby behind the born . She saw his father too who gave to adoption. His father was the Devil king and his fire energy was in hereditary. The little blond hair was a little bit scary by the baby apparence but she said in the same time that he was cute. That girl named Emily. She agreed to keep and adopt the baby as little brother. Now Gravin grew up and the thing he knew is ,his father passed away and he took his place. And he’s 12 years old. Before he died. Yes he died. Crushed by rocks avalanche. Days later he was found by scientists. He was the cobaye for the ressuscition experiment. They did successfully but once he was woken, Gravin had a king of awful rage of pulpit. Scientists put him in case leached for the time for finding an antidote. They finally did it but the problem it’s just temporary. So Gravin ,in the same time has lost a big part of his memory. That’s why scientists fed him, washed him and communicate with him with psychological evaluations each day. After few days (at the first week) he quits the lab and try to found his home. He did it.