The heroine Sawada Tsunayoshi was the sister of the first leader of Vongola in her previous life, Qiaoya Vongola. She sacrificed herself to protect Giotto and was reborn in the world hundreds of years later.
There is a childhood sweetheart, Hibari Kyouya.
Tsuna can use supernatural powers (the kind from "Ultimate Family")
For now, only Nana Sawada, Iemitsu Sawada and Kyoko Sekawa know that Tsunayoshi is a girl in the world. (Ps: Hibari Kyouya doesn't know that Tsunayoshi is a woman)
(Introduction will be posted later)