Just like magic

Tyler Michigan, a 16 year old boy that has gotten released from a self defence orphanage with his best friend. His parents died when he was born and there was lots of crime in his city so he went to a orphan. Now he lives a normal life with his friend Chris. Well, not completely normal. One day he goes to a shop and the shop keeper offers him a potion. Stupidly he takes it and drinks it. He doesn't know what it does but, the shopkeeper told him to try it out in some killing arena.

Tyler didn't want to go killing people but he was curious what it would do so he went. When he got there there was a paper that he had to sign, then he was allowed in. Coming in there he saw tons of people. For a underground fighting arena it was big.

Then the fight happened. He pulled out his katanas and got ready. He didn't really have control of his powers but after fighting a few times he gained control.

But there was something tricky. He went to high school so he had to hide his identity.