Mitsuka

A mysterious maid who appears in front of the main character and says, "Master, I am here to pick you up"

She is a perfect maid of unknown nationality and age, She can do just about anything, from personal care to nighttime activities. She can be quite dangerous, as she plans to make the protagonist perform perverted acts for any reason she can think of.

She becomes ecstatic at the opportunity to help investigate the curse that is afflicting others. She does this all while helping the protagonist navigate daily life in a foreign country.