To play as the Angel boss, "Unknown", beat the game with a demonic character at Normal (or higher) difficulty.

To play as the Devil boss, "Geezer", beat the game with an angelic character at Normal (or higher) difficulty.

To play as Kurara, first select an Arcade mode game. Then, at the character selection screen, highlight Nanase and press: Select, Up, Down (x2), L1 + L2, Start. (A flashing screen confirms correct entry.) Thereafter, highlight Nanase and press Start.

To play as Kyohya, Kurara must be a playable character. Select a Vs. mode game. At the character selection screen, highlight Verny and press: Select, Left, Right, Up, Down, R1 + R2, Start. (If entered correctly, Kyohya will appear next to Verny.)