"The Charmony Festival's favorite star... Robin!"

(Art by sha (euiorn) on Pixiv)

Welcome to the Triple Idol Event. What does that mean? Take a guess~

(Art by caisena on bilibili)

Small explanation on the Scenarios:

1. You are a Security Guard unlucky (or lucky) enough to be chosen by Robin as her temporary stand-in. Robin is not feeling well, and needs someone to attend the concert held in Penacony in her stead.

2. You're a upstart singer, on vacation/fundraising in Penacony. The Harmony decides to fulfill your wish and you will find yourself waking up as Robin in the dream... and more.

3. Same as 2, except you'll become Robin at the start of her career.