He, Sawada Tsunayoshi, is the boss of the Vongola Family.
Some people say he is an angel because he is gentle, tolerant of everything, and treats everyone around him sincerely.
Some people say that he is the devil in the dark night because he is cold, bloody and merciless towards his enemies.
He, Six Paths Skull, is the Guardian of the Mist in the tenth life of Vongola.
For ten years, he was imprisoned in a place called Avengers Prison.
He escaped again and again, and was imprisoned again and again in a place filled with cold water.
After making difficult choices again and again, he finally decided to save his corpse...
But will things be so simple?
What kind of bloody storm will happen in the heavily guarded Avengers Prison?