Fight as Burning Batsu
Select story mode and play as Taiyo Gakuen. Intentionally have Batsu lose one round to Akira, Yurika, or Zaki. Iincyo will replace Batsu afte rthe match. Burning Batsu will appear when fighting Vatsu.
Fight as Demon Hyo
Successfully complete the game in story mode with all schools and all endings.
Fight as Hyo Imawano and Dark Side Student Council
Successfully complete the game in story mode as all the normal schools. Hyo will be unlocked in arcade free mode, versus mode, and training mode and the Dark Side Student Council will be unlocked in story mode.
Fight as Kurow
Successfully complete the game in story mode as the Dark Side Student Council.
Fight as Powered Akira
Select story mode and play as Seijyun Syogakuen. Defeat Wild Daigo without using a three person team up attack. You can use a two person team up attack.