Three years have passed since the succession of Sawada Tsunayoshi. I thought it would be peaceful forever. Unexpectedly, a new battle ushered in. This time a new family appeared, and Bai Lan was not dead. He even traveled to the past to obliterate Vongola's existence from the beginning. And things don't seem to be as simple as they appear. Faced with Bai Lan and others who are more powerful than in the future battle, how will Sawada Tsunayoshi and his team resolve this battle? And the secrets between the new family and Vongola will also be revealed, and what is the connection between the two.