Son of Demon's Bloodshed

Hikaru Misoka Kuushou watched, defenseless, as his father, the man he looked up to, slaughtered his entire family in front of him; leaving his mother to be taken out last.
Who knew that his father was going to turn out to be a notorious serial killer nicknamed Demon of Bloodshed?
After those horrifying events that ruined Hikaru's life, the six year old traveled out of Iwagakure and got trained to prepare for the promised battle that he would have with his father. At the age of eleven, he is feared by many, and his reputation is only made worse when the world finds out who exactly his father was.
Now living in Konoha, watch as Hikaru grows stronger and protects those he cares for this time around; because he is not going to let anyone take away his precious people ever again.
And he's going to start off by taking out the problem - Hisashi Kuushou, his father, the infamous Demon of Bloodshed.