This is a Challenge for a Harry Potter and Katekyo Hitman Reborn! crossover.

There is going to be slash between Harry and Xanxus or Lussuria (or both ; ).

(I modified my challenge some mayby it is more appealing to write now)

Harry destroyed Voldemort in that fateful Halloween night when his parents were murdered. An Arriving Aouror scooped the Baby up and rushed him into Saint Mungo. A Healer checked him over and discovered that Harry's magical core was crippled and there was no hope of healing it.

Harry was left with the Dursleys. Without the fear of his magic there was nothing holding them back from taking out all their anger and frustration on the small child.

His understanding of moral, right and wrong twisted more and more as he grew up and in his option everybody lied and anything was allowed (slightly stolen from Assassins Creed...) as long, as it kept you alive and protected what was yours.

When Harry turned six his cousin and his friends beat him up so bad with sticks and stones, he nearly died. Suddenly something inside him gave away and a beautiful purple flame erupted from his body and consumed his attackers.

When his magical core had been crippled because of the backlash of the killing curse it had not fully left his body. It had simply transformed into something else entirely.

The decision to attack Harry that fateful day should be his last and his unending terror his eternal cage. His mind was shattered beyond repair.

When Vernon found them, Duddly and his friends shivering and drooling on the ground, Harry curled up in his own blood, covered in cuts and bruises he ordered Petunia to take Duddly to the hospital, while he took care of the Freak.

He dumped Harry in the one of the shadier parts of London and drove of without a second look at the broken form of the child.

Harry survived and after he recovered he started to experiment with his beautiful flame and grew more and more powerful.

He stole and learned to come by alone. He had learned his lesson to never trust humans to have his best interest in mind. He needed only himself.

At last he thought so until he encountered a strange, loud silver haired man with a sword when he was ten.

The massive flow of mist flame cough Squalos attention and without caring for the struggling, biting or the little illusions the rain grabbed Harry an hauled him of to Varia HQ.

For it was one thing for his illusions to work on normal people, to deceive a flame user it needed a little more.

It took a long time for the Varia to crack Harry's walls and worm their way into the heard of the little mist but after much work and a whole lot of struggling on both parts Harry began to become a part of their little dysfunctional family.

Harry started to trust these wired, violent people who all swore their lives to a man locked in ice.

This unwavering loyalty moved something inside him and a longing began to grow in him. A longing to belong to be part of something, to have people watch his back and an almost overpowering urge to protect the fragile little bonds that had grown between him and these people.

From here on out it's up to you how to proceed (would bee wonderful if you wrote the back story in your own words : D )

I would like Harry to be a bottom in the relationship but not some girly b****.

Also do not make him a godlike Harry. And when Xanxus defrosts Harry will become his mist guardian.

And, please, do not forget he is an abuses child that wants nothing more than to be loved and accepted, even when he has convinced himself he needs only himself.

I would like Squalo to be somewhat of a parental figure for Harry but that's up to you.

Ps: I'm sorry for any grammar or spelling mistakes I made.