Comprehensive Manga: I Created The Vongola Family

Traveling through another world and discovering that his name is actually called gitto, and that the system even wants to establish a Vongola Family by itself?
 
No way, in this world of monsters, eccentrics, and heroes.
 
In order to live safely, gitto can only accept the tasks of the system
 
Create the Vongola Family.
 
"Saitama-san, you are the guardian of my sunshine, and the flame of death can also cure your hair problems."
 
"Grandpa Tong, you all play with swords, why don't you be a guardian of the rain, so that you can also use the starburst Abandoned Healing Slash in reality"
 
 
 
Years later, people discovered that the world was slowly being controlled by a force named "Vongola Family".
 
They are powerful, rich, mysterious,
 
People have all kinds of evaluations of them, but the most praiseworthy,
 
It is called the leader, the man with a gentle expression, a handsome face, and the flame of death forever burning on his forehead.
 
(Don't worry if you haven't seen a tutor, I will explain the relevant settings)