The English voice for EMMA is Susan Bennett, who also provides the voice for Siri, the voice assistant A.I that comes with Apple brand smartphones.
Ryuji FINALLY says the "f word" in this game. Fully voice acted as well
None of the secondary characters other than Sojiro and Sae appear in this game. Takemi and Iwai are also mentioned as Takemi is away at a medical conference and Iwai has temporarily closed his shop with no reason given.
All the voice actors from the original game reprise their roles as the Phantom Thieves.
This game takes place six months after Persona 5 ended. Despite this game being as long as the first game, the time line is shorter as this takes place over the course of a month while Persona 5 took place over a course of eleven months.