Masked Legends: Riders in the DxD Dimension

Axel and Shiro are Wattpad Fanfic Writers that they write their fanfic, they were talking about the recent episode of Kamen Rider Gavv. Suddenly a portal suck them inside and meet Kami-Sama and Tendou Souji from Kamen Rider Kabuto.

Kami explain that the Worms is invade the world of DxD to mimic humans and replace them, leaving two authors shock and want to stop them. Souji give them two Zecter and chosen to become Kabuto and Gatack to save the supernatural world.

Souji explain that he need to train them to use their powers. After 3 months training, Kami explain that they need to send their message to their loved one to goodbye, they accept it and ready to go the world of DxD, they went inside the portal.

They arrive before the show started and leaving in the mansion, their task is to defend world of DxD and give the Zecters to the successors, so they find themselves in Kuoh Academy and show the three factions that their path is guide to heaven and war.