Fight as Burning Batsu:

Play the story mode as Taiyo Gakuen. Make Batsu lose one round to Akira, Yurika, or Zaki. Iincyo will replace Batsu afte rthe match. Burning Batsu will appear when fighting Vatsu.

Play as the Gedo Koukou School:

When you go up against Wild Daigo, defeat him with a three-way team up in at least one of the rounds. The story will branch off. You will unlock Wild Daigo after you defeat Demon Hyo.

Fight as Powered Akira:

Play the story mode as Seijyun Syogakuen. Defeat Wild Daigo without using a three person team up attack. You can use a two person team up attack.

Fight as Wild Daigo:

Play as the Gedo Koukou School. When you get to Wild Daigo, defeat him with a three-way team up in at least of the rounds. The story will branch and you will unlock Wild Daigo after you defeat Demon Hyo.

Fight as Vatsu:

Beat the story mode with Gorin High School.

Fight as Roy:

Beat the story mode with Pacific High School.

Fight as Tiffany:

Beat the story mode with Pacific High School.

Fight as Hyo:

Beat the story mode with each of the schools.

Fight as Darkside Student Council:

Beat the story mode with each of the schools.(Dark side Student Council only available in story mode)

Fight as Kurrow:

Beat the story mode with Dark side Student Council.

Fight as Demon Hyo:

Beat every story branch in the story mode with every school.(Make every possible choice and unlock all other characters)