year 2020... Wakana and Hikaru found a new member, Momo. She is an absolute beauty and sings heavenly. A perfect pitch.
They are about to sing at a concert at Tokyo Arena. All glamorous dresses and lights. Suddenly, all lights go black. A word appears in bold red : "WARNING" and turns clockwise in all the screens around the arena.
Wakana: "What is going on? This wasn't part of the concert?"
Then slowly Momo takes the center stage and speaks in Keiko's voice !!! : "Kalafina is MINE!!!" turns out Momo was an android built by Keiko to infiltrate Kalafina.
while playing Communication Breakdown - Xenosaga II.