XANXUS, only son of the Ninth-generation head of the Vongola family, was taking part in a trial for the succession at the Vongola training rainforest during the summer when he was eleven. There, he carried back a brown-haired toddler who looked about two or three years old.
XANXUS decided the child was from Japan and named him "NATSU," meaning "summer." He treated the child as his younger brother, kept him by his side and taught him, personally taking care of every aspect of his life. He gave him every kindness, every privilege, and boundless affection.
Then one day, the heir training base was suddenly attacked. The six-year-old sacrificed his life to give his older brother, the young Varia leader, a chance to survive.
Young XANXUS was consumed with regret and fury, but he was powerless to bring the child back.
The Vongola family had become the only treasure the child had left him.
But his father's diary dealt him a devastating blow...
He began ruthlessly eliminating his peers who had claims to the succession. If everyone else was out of the running, then whether the elders liked it or not, he would be the sole heir.
And so, at sixteen, he chose to stage a coup.
Unfortunately, the coup failed, and his father personally froze him in ice.
Eight years later, at last released from his seal, XANXUS tracked down a clear photograph of the heir...
The Varia tyrant: Good. So the elders and those old men have been playing me for a fool all these years. Sawada Iemitsu, you and your son can wash your necks and wait to die!
Sawada Tsunayoshi, with his memories restored, Tenth-generation head of the Vongola family, Black Rabbit: After all these years, I'm finally going to see my big brother. I hope everyone in Varia is doing well?
The Ninth-generation head of the Vongola family: Knowing the whole truth is exhausting... The Primo living in the Vongola Ring must be going crazy...