You may have seen gameplay videos of Persona 2: Innocent Sin before. Maybe you played it yourself! This video, posted by 4gamer, covers the PSP version with text detailing all of the tweaks Atlus made to the game.
The emotion system during demon negotiation, cut-in animations, the new world map, and climax theater are all covered in this eight minute video.
Naozumi Kariyazaki, the teacher from the "Charisma Classroom" scenario, is seen at the tail end. Check out this post for more details on the new quest.
Persona 2: Innocent Sin makes its debut in Japan on April 14. (That’s this Thursday!)