Tanaka Yubiseiharukana

A freshman at Kyumeikan Women's University intending to major in archeology, and a part-time worker at LeMU. Her father gave her this unique first name because Tanaka was a common surname but very rare as a first name. She also possesses a wealth of occult-related knowledge and skills to survive in an emergency. More than anything, she loves to talk. Her nickname is "You."

She is the young "Tanaka You" in 2017 LeMU incident and the grown-up "Dr. Tanaka" in the 2034 LeMU incident. By 2034, she is 35 years old but physically 23 years old, and she is pretending to be her own mother, "Tanaka Yukie."