Hero who became the darkness

Hero Leon got betrayed by his companion,as they people are scared by his immense power.

They killed his family,lover and soon killed him.

Before dying Leon heared a voice.

'Do you wish to get revenge?'

'Yes,if i can have another chance,i will destroy them,i will make them pay for what they did.'

'Very well.'

Leon then fall into darkness,soon he woke up in a new body,A body of a vampire.