Record of the Chastisement

This record is a whole composition notebook found in the ashes of a fireplace digitalized. They're completely criminal occurrences! Join various protagonists as they try their best to deal with daily life in the reformed world after _____ ______'s changes he made with his friends. It's a very different world.
Buckle up.
(Note: Pictures are from the notebook, either located in footnotes or at the end of each page. Some don't include any. Can't confirm nor deny their reasoning for being there.)