Sayoko Nanamori

As Itsuki's research assistant, this character harbors deep, unrequited affection for him, often expressing strong anger when the topic is brought up. A notable running gag involves her car's wiper acting out her distress. A pivotal event involves a crystal pendant that transforms and absorbs her, linked to dramatic weather changes reflecting her emotions. Later, she becomes involved with Makoto Isshiki, providing crucial information that indirectly impacts the Bähbem Foundation. Her past is complicated by false memories implanted by the organization, leading to tragic consequences.