This is one of the secondary main leads. Serenith is a Seraphim angel at Heaven. Serenith has a calm personality and calmly threatens people, which makes it disturbing (I swear, my teacher keeps threatening students to send them to principal’s office in such a happy tone. It’s so creepy 😭). But, when Serenith tries to overcome a really bad situation, perhaps a huge loss of Angels, she. Will. Go. Mad.