Kuroko Tetsuya, who has no sense of existence, no friends, and a loser in sports, suddenly came to his house one day, a little baby tutor named Riboun wearing a suit and said to him, I will teach you to be a qualified Boss.
As a result, friendship, blood, and fighting surrounded Heizi, and Heizi, who was unwilling to be the boss, embarked step by step on the road to becoming the Vongola Boss...
The author opened up new ideas but didn't want to fill them in, so I just put the settings here╮(╯▽╰)╭