After graduating from high school, the story of Koyomi Araragi came to an end. This time, it truly ended. However, the story of the girls who were saved by Araragi was not over. It is a prequel, or perhaps a sequel to their struggles in youth.

Dr. Goro is reborn as the son of the young starlet Ai Hoshino after her delusional stalker murders him. Now, he wants to help his new mother rise to the top, but what can a child do about the dark underbelly of the entertainment industry?

Years ago, the fearsome Pirate King, Gol D. Roger was executed leaving a huge pile of treasure and the famous "One Piece" behind. Whoever claims the "One Piece" will be named the new King of the Pirates. Monkey D. Luffy, a boy who consumed a "Devil Fruit," decides to follow in the footsteps of his idol, the pirate Shanks, and find the One Piece. It helps, of course, that his body has the properties of rubber and that he's surrounded by a bevy of skilled fighters and thieves to help him along the way. Luffy will do anything to get the One Piece and become King of the Pirates!

After graduating from high school, the story of Koyomi Araragi came to an end. This time, it truly ended. However, the story of the girls who were saved by Araragi was not over. It is a prequel, or perhaps a sequel to their struggles in youth.

Dr. Goro is reborn as the son of the young starlet Ai Hoshino after her delusional stalker murders him. Now, he wants to help his new mother rise to the top, but what can a child do about the dark underbelly of the entertainment industry?

While under the guise of taking his family on a weekend winter getaway, Loid's attempt to make progress on his current mission Operation Strix proves difficult when Anya mistakenly gets involved and triggers events that threaten world peace.

It's the ultimate showdown. The toughest fighters from "Baki Hanma" and "Kengan Ashura" clash in this unprecedented, hard-hitting martial arts crossover.