A beautiful-yet-awkward genius recruits three otaku to protect Akihabara. Powered only by their own delusions, and aiming to be acknowledged as a true Sentai team, they become the Unofficial Sentai, ...

After defeating Delu Knight by exploiting the defeat flags in the warped reality, a strange new hero appears to become the 4th member of the Akibaranger team! However, upon their return to Secret Base ...