The younger sister of Rei Ijuuin from the first game, Mei has the same conceited personality as him and often looks down on "common people" and treats them like servants. She is one year younger than the protagonist and appears in the game's second year. Mei is a computer fanatic.
- Her hobbies are collecting good brands, and looking down on common people.
- She loves her wonderful self and mangosteen. She hates crowds, having to be patient, and green onions. In fact, when she goes to the burger shop, she always removes the green onions from her burger.