Angela

Angela is the commander of the Bismuth heart, the secret organization created to ensure the survival of mankind and [Redacted].

Not much information is known about her.

She's recruiting people to be her soldier (and take their soul), in return, she'll provide a place and thing require to live and powers.

Intervention
In battle, she can help her soldiers fight by using "Intervention skills". They're powerfull long-range spell which she can choose 3 skills per battle and usually have a long cooldown.

Right now, there're 3 Intervention skill available :
 * Hype incitement : Charge the current servant buster gauge by 50%
 * Cease! : Stun an enemy for 1 turn.
 * Angel of dire hour : Give 100% chance to evade to one ally.