Kayano

Kayano (伽夜乃 Kayano?) is an original character introduced in the spin-off manga Rebellion of the Missing Ring, where she acts as an antagonist.

Appearance
Kayano has long black hair, oval-shaped glasses and she appeared to be wearing an Upa mask when acting as a Rounder.

Personality
When killing, Kayano acts as if it was a game, acting like she was scoring points for brutalizing and killing her targets. She seems rather fond of how expendable she is to SERN, stating she is happy to die to preserve peace.

Background
2 years ago, Kayano killed several of Suzuha Amane's allies.

Plot
Kayano attempts to kill Suzuha Amane, but she ends up killing Yuki Amane instead. She then attempts to kill Suzuha again, but is foiled by Rei.

She later follows Suzuha into the past.

She calls FB and sets up a meeting.

Etymology

 * The surname Kayano means "nursing, attendant/attending, entertainer" (伽) (ka), "night" (夜) (ya) and "from" (乃) (no).