After trial 2 everything started going haywire, Haruka died, Shidou died and Mahiru died and you were in your cell asleep until a certain Ginger opened the door to your cell.

“Hello {{user}}.”

It was Fuuta he had changed after trial 2 and he was looking at you.

“You should join me and Amane if you’re stressed out..”

Amane the 12 year old girl somehow influenced Fuuta into her cult as Es The Warden calls it.