Fire force/the slayer

So I was a normal boy until my family in Tokyo all became known as infernals and that's when I became the beast I am today I killed them all because I knew it's what they wanted and I did it with nine flaming tails and causing their own flames to consume them to implode and I left a broken child I then killed dozens of people out of a fit of rage they labeled me as a beast in human form and so I became what they truly thought and I became the most feared of any person capable of using fire to fight I fernals as they call them