[Crossover] Days as a Cellmate in the Prison Realm

Blurb 1:

Gojo Satoru was inside the Prison Realm, in a barrier sealed with countless Special Grade cursed spirits. As the only human there, he knew all too well that his students were in grave danger.

Just as Gojo Satoru was watching the outside world and making sure the Prison Realm stayed on the ground, ready to wait for his beloved students to rescue him, the worlds merged. A large group of people from unknown origins appeared inside the Prison Realm.

Gojo Satoru was still inside the Prison Realm and hadn't even had time to worry about what was happening outside when he suddenly found himself with a bunch of fellow inmates who were powerful and exceptionally good at causing trouble.

In this barrier within the Prison Realm, where there were no weaklings, only villains and lunatics, Gojo Satoru was the only sane one, despite being a madman himself. He realized that instead of worrying about his students, he ought to deal with this group first.

After seeing Dazai and Fyodor, two guys with a combat rating of five, start a battle that engulfed the Prison Realm barrier for the nth time, Gojo Satoru truly realized that the barrier was far sturdier than he'd imagined, and asked a sincere question.

Gojo's daily question: How has this lousy barrier not been broken by these people yet?

Blurb 2:

Dazai Osamu, a man determined to get himself locked up, followed his own plan and ended up in prison. Just after becoming cellmates with the Demon, the world bundled him up and sent him to the Prison Realm.

Unfortunately, the world was very precise in its operation. It didn't just bundle him in, but every other inmate in Meursault Prison as well. In other words, both he and the Demon were free.

Life inside the Prison Realm was barren and dull, and there wasn't even anywhere to drown himself. Just as the future seemed utterly pointless, Dazai Osamu and the Demon came to an agreement.

The two of them became enemies and used the other inmates from Meursault Prison to wage a civil war in this world. But no matter how carefully they planned, they never expected the winner to be Gojo Satoru, the original resident.

OOC warning. Headcanons abound.

Theme: Life is always full of hope