Himeru

"You can't remember anything? Not even how you died?"

One of the two self-proclaimed “angels,” God’s messengers. Seemingly, their role is to guide Rei...? Impatient and prone to panic, she is the driving force that compels Rei to move forward when reluctant. For some reason, she has clear malice and hatred toward Shuten.

From official website

In truth, she is a spyware program made by humans to hack the Founder and infiltrate Shuten. Her appearance is modeled off the human Himeno from within the Founder's memories.