Missing Puzzle Pieces [Rewrite of TSTCS]

Sawada Masayoshi is a young teen, his life was just perfect, he had a brother, a father, a mother, and supporting friends.

But his life all went crashing down on the fateful day,
.
.
.
.
.
The fateful day that his brother dies.
_____________________________________

After the fateful day, his grades went down the hill, his friends vanished, he shut himself in more.

He hated it.

He hated his life... All he wanted to do was end it...

But something stopped him, a similar, yet not kind voice that belonged to his encourager encouraged him to stand up, and live to his fullest for his brother's sake.

And he did.

Years later, he still had low grades, but just Cs and Bs, but burning determination flickered on his sky blue eyes.

A hitman infant came by and claimed to be his tutor, and later admitted that Masayoshi will be the Tenth Vongola Boss.

He did not want to, but a certain voice in the back of his mind said that he should be the Mafia Don.

What will his life become of now?

Start: April 29, 2018
Rewrite: July 15, 2018
End: