Tsuna has grown up called many names: dame, useless, outcast, disgrace, abomination, worthless, freak, wimp, dirt, unloved, and so many more.
He was called the disgrace of the family, and alot of people believed that.
With a brother that acted like an angel in front of everyone as a ruse, and a simple minded mother. No one could see his pain.
But he found a way.
Found a way to live. To survive. He became known as [ ]/Blank or White. He became a hacker and informant, and was damn good at it.
He made a decision to survive and that's exactly what he is going to do.