Bat-Manga!

While doing a news story in Gotham City, a documentary team from Tokyo films Batman as he rescues a group of hostages from the villianous Two-Face. The only problem is that Two-Face is still locked up in Arkham Asylum, and the man they captured is dead. Soon, other copies of Batman's famous rogues' gallery begin appearing all over Gotham, and the trail leads to a drug coming from Tokyo. (Source: Wikipedia)

Issue 1: There's a new serial killer in Gotham, and he may have ties to the training Bruce Wayne acquired as a young man in Japan. Does the murderer know Bruce Wayne is the Batman Issue 2: Bruce Wayne must confront his past and examine how the time he spent in Japan as a young man training to become Batman affected him...and whether his experiences then somehow led to the killer now rampaging throughout the underworld in Gotham. Issue 3: The mystery of the deadly masks is uncovered, as the killer reveals his long-standing deep-rooted connection to the Dark Knight and the time they spent together as students in Japan years ago. Issue 4: Events come to a head as the Batman must defeat the Oni — but before he can confront it, he must first face his own troubled past. (Source: DC Comics)

The story will feature the Justice League heading to Gotham City to protect the world from the Joker and an alliance of super-villains. (Source: Anime News Network)

Gorilla Grodd's time displacement machine transports many of Batman's worst enemies to feudal Japan - along with the Dark Knight and a few of his allies. The villains take over the forms of the feudal lords that rule the divided land, with the Joker taking the lead among the warring factions. As his traditional high-tech weaponry is exhausted almost immediately, Batman must rely on his intellect and his allies - including Catwoman and the extended Bat-family - to restore order to the land, and return to present-day Gotham City.

In Batman: Justice Buster, Gotham City has been under the protection of Batman for only a short amount of time, but since the vigilante’s appearance, crime has changed. It’s gotten more bold, more destructive. As Batman tries to rise to meet these new threats, he develops a computer system, ROBIN, to help him analyze and subdue the rising criminal tide and hopefully one day put an end to crime in Gotham. (Source: DC Comics)

Joker: One Operation Joker is the Joker like you've never seen him before…as a single father?! After a fateful encounter with Batman that results in the Dark Knight de-aging to a baby, Joker takes it upon himself to raise the child into the crusader of justice! But does the Clown Prince of Crime really understand what it means to be Batman—or, more importantly, what it means to raise a baby all by yourself? (Source: DC Comics)