Subject 12-B

"My head... The ghost I keep seeing is calling to me."

Subject 12-B, or 12-B is an experimented Lullafairy with telekinetic powers that originates from the same lab as Eight. During a room-shift, she saw the past of one of the labs rooms, and saw what Eight experienced. He unknowingly started calling out to 12-B, making her interested on finding the source of the call.

She hears the call coming throughout the region, but mostly from the World Tree. So that's where she's headed.