A mysterious Servant who, sensible businesswoman that she is, appeared in Chaldea earlier than expected to celebrate the 6th anniversary. She is a spy whose power and charm are all still shrouded in mystery.

She is the very same Koyanskaya who worked against Chaldea, but she is no longer a juvenile Beast. She is simply a very attractive, very talented secretary (of light). At least, that's what she claims...