In Mirror Mode you can play as the Doki's and playing certain songs in Mirror Mode unlocks you some custom skins for the characters
00:00 My Confession
01:54 Baka
04:32 Obsession
07:06 Reconciliation
My Confession Mirror Mode Unlocks Blue Skies Sayori
Baka Mirror Mode Unlocks Friends Natsuki
Obsession Mirror Mode Unlocks Friends Yuri
Reconciliation Mirror Mode Unlocks Blue Skies Monika
This mod is from DusterBuster!