How to unlock all secret characters (spoilers!)
- Lucas: Click the empty space to the left of B1 (Jameson) and M1 (Barbi). The icon is invisible!
- Tsukasa Hiiragi: Go to Credits, then click on the smiley face. Simple as that!
- Hatsune Miku: When Teto is on stage, click below where Lucas' icon should be. The answer is Miku/Hatsune Miku.
- Neru: When both Teto and Miku are on stage, click to the right of E5 (Remi)'s icon. The answer is Neru.
- Place down E3 (Kraton), V2 (Sophia), and Bonus 3 (Litany?) at the same time.