Six college students that about to hold a meeting on their club suddenly being sent to another world by an unknown hooded man where they're must stopping the war between two kingdoms, defeating Smash and their creators, and finding a way to go home altogether...with the power of Build...various pairings.

Ryuuto Kagemaru, a normal high school student, stumbled upon a mysterious bottled gourd in a hidden room at the Kyoto tower. Within the bottle is a powerful artifact used by the legendary super ninja many centuries ago. The artifact has chose him to be the next heir of the legendary super ninja. Known as Kamen rider Shinobi, a shinobi written with a blade and heart. (Ch1 rewritten)

Years ago the 100 year war ended with the defeat of Phoenix King Ozai. Following it many things happened and with them Avatar Aang accomplished many great feats. But like the seasons the Avatar Cycle begins anew but with this new Avatar new enemies appear as well. But from the shadows a storm approaches to aid the Avatar as she braves this weather. Now, NINJA STORM RANGER FORM HA!

The life of a Shinobi has never been easy. Death, deceit and dark secrets hide behind every corner, not to mention the looming threat of the fearsome Yōma. Things only get more complicated when Fantastic Creatures from another world start appearing all over the place, just how will the Shinobi community react to this?

Charles zi Britannia ruled the Empire with kindness, wisdom and honor, he led his changed nation through an era of peace and prosperity. But that peace will soon be broken when a mysterious gate appeared and an army from a different world began a brutal attack on the city of Los Angeles, which inevitably spark a war between two nations (Good/Charles)(No Geass)(Half-Britannian/Itami

2 years after the defeat of the Bugsters, Hojo Emu and Co, get summoned to another world, where creatures called Noise ravage the city and people who fight them with armor called Symphogear. Will Ex-aid and the other Riders save this world with no continues?