Just when Ayumu thought his life couldn't get any crazier, a certain Caped Crusader from America begins to investigate him closely and finds himself involved with the Underworld, Vampire-Ninjas, Masou-Shoujos, Doujinkas and his own cohabitation hijinks. [Batman x Seraphim x Harem]

Batman somehow finds himself in the world of Ikki Tousen. "Reborn" as Bruce Kyoui with his own magatama, he is taken to Seito Academy by the mysterious Koumei as her unwilling 'apprentice'. As he navigates himself through the raging Kanto turf war, he remains unaware of a larger role planned for him.

To avenge the death of his parents, Bruce became the Batman and swore to protect Gotham. He never expected a sword wielding Demon cat girl swearing to protect him, nor did he expect that the Waynes had a secret legacy in Japan.

While a seemingly reformed Penguin hosts the new KoF tournament in Gotham, Batman investigates the murder of a renowned martial artist while also dealing with a crime lord from South Town who plans to make his mark in Gotham.

After a series of calamitous events, Gotham is seized by the MBI corporation and Batman is trapped in a city-wide mega prison. The only way out is a deadly game of survival involving beings who came from the stars. For the sake their Ashikabi, only one among them will stand in the end. The Sekirei plan is underway and the chosen battleground is Arkham City!

It all began with a sword stolen from the Gotham Museum. After a fateful encounter, Bruce Wayne finds himself in the world of Blazers and with abilities he's never had before. Now he finds himself facing unusual circumstances, a mysterious organisation, and the possibility that his very being might be changed forever.

A mishap with a Cross Gate strands Batman in an unknown world with missing memories. With four ladies by his side, he will need to survive life in the Endless Frontier while seeking answers. Meanwhile, KOS-MOS, Haken, Reiji & Xiaomu teams up with the League to fight an invading threat.