Saitama was chose to help 2 children that are still middle schools but they have already live together although ever since Saitama hits there lives not only the twin stars must faced against Basara or Kegreats but they must help Saitama battle against monsters who comes from his dimension

A boy experiences a dream of being in another dimension and experiencing unknowable memories. He is determined to find the answers to why he's dreaming of that kind of realm and why the uncertain memories haunt. In his journey, the memories that he'll encounter will either be the ones he lost or those that belongs from another self.

Instead of being killed on her mission, a delayed Summer Rose somehow ended up in magano, the world of the Kegare. There she found a Faunus child, not knowing that this child, along with another Faunus child, will have an important role to play for the future of Remnant.

The head of all exorcists, Tsuchimikado Arima, sends one of the Twelve Guardians, Mitosaka Kankuro, to Academy City to investigate the cause of Impurity-like creatures that appeared only recently. There, he meets a certain number of familiar faces and new ones.

Traveling through time space, creating boundary worlds, making deals fighting vileness and darkness of human emotions given form, just another day at the office right?