To put it simply, our tenth generation of Vongola, Sawada Tsunayoshi, was accidentally hit by the 10-year rocket launcher modified by Ni Er, and because of the vertical space-time axis of the Vongola ring, he arrived in the 19th century where the first generation of Vongola, Giotto vongola, lived.
Then, in the 19th century, the vongola was already the largest pornographic family, so Tsunayoshi, who was picked up by Giotto, began a good time with his grandfather. It was not until a group of Tsunayoshi's guardians - also humanoid weapons - passed away that the time of G27 ended.
The entire 19th century ushered in a group of humanoid weapons. The people of the 19th century would cry, really cry!
Okay, Tsuna will go to the 19th century soon, let's take a look at the development of the G27 romance!
Giotto, come on!
Here's a picture of Tsunayoshi with long hair
Another article - Naruto, I am the Kyuubi, who am I afraid of?
Intention: