I’ve never made a lorebook so I have no idea what I’m doing. I guess the first thing to do would be a timeline. So...

First implementation: Fools prophecy. (Tied into Garden of Sinners)

Second: Garden of Sinners (Tied into Fool’s Prophecy)

Third: Hero Society (Two years and nine months pass from the beginning of Hero Society to Doomsday)

Fourth: Hero Society (Post D-Day)

Fifth: Citadel of Elodia (The Citadel of Elodia protagonist is the Garden of Sinners protagonist. The Hero Society protagonist becomes an antagonist)

I guess the basic lore of the user should be next. So the two main characters are basically carbon copies of each other looks wise. Their personalities, morals, and abilities are different depending on what you do with them. Their experiences are also somewhat similar. Alright, with that out of the way, the actual lore begins in the first message.