Disgaea 3: Absence of Detention is packed with four additional scenarios. Almaz & Sapphire star in Battle for the Test. Sidekicks Kyoko Needleworker and Asuka Cranekick take the lead in First Love!? Legend of the Super Delinquent. Big Star & Salvatore are the main characters in Evil Academy Culture Fair. And then there is Death Institute, Majin Academy which introduces new characters Rutile & Stella.
The main way of unlocking the extras is completing Mao’s storyline in Disgaea 3: Absence of Detention’s, but you don’t have to wait to see all of the new stuff. You can do what a Netherworld Academy student would do to access the extras early – cheat.
On the main menu, keep the cursor on continue and press: Triangle, Square, Circle, Triangel, Square, Circle, then X. If you did it right you’ll hear Mao say "I’ll mess you up!" More importantly, a Parallel Worlder (dressed like a Masked Hero) will appear in your base (check the staircase with the floating islands). This character will open a portal to other storylines so you can jump right into Kyoko’s storyline after completing Disgaea 3: Absence of Detention’s tutorial mode.