After Mithos and Lulu MERGED WITH THE BUILDING we decided that they would be possessed, and we could bring that up later. Thennnn we were gonna have them turn on the party at some point . . . and then I (this is Zazzle btw) was like, man, we should have a Persona 4 boss fight at the end! And I think we were both thinking of how Namatame has people come over to his side and be mind controlled in that fight, but then I ended up just being like GOD MITHOS SHOULD BE THE FINAL BOSS :U because . . . Mithos.

So . . . things just sorta happened.