Akira
Complete the Normal Mode with Yugo.
Arthur
Complete the game with Ann.
Cindy
Complete the game with Douglas.
Genya
Complete the game with Saya.
Jelly and Billy
Complete the game with Kaiya. Then at the character selection screen press the Square or the Triangle button for Jelly and the Circle or the X button for Billy.
Kaiya
Unlock all of the hidden characters and complete the game with one of them.
Kazane
Complete the game with Zhou.
Kornelia
Complete the game with Heinz.
Mark
Complete the game with David.
Running Bugi Mini-Game
Unlock all hidden characters.
Sessue
Complete the game with Hyoma.
Steve
Complete the game with Allen.
Su Qingtao
Complete the game with Yuli.
Zhou
Unlock all hidden characters then complete the game with one of the default characters.