天川 美夜子

Natsuhiko's mother. A senior fellow at LABO. Due to her job as a renowned scientist, she rarely comes home.
Her specialty is particle physics, and she is world-renowned as an authority in the field.
Upon the quick realization that Natsuhiko, the child her beloved husband left behind, had BC aptitude, she devoted her life to researching ways to prolong the life of Communicators, even if it meant she had to neglect their home.

On the other side of her deep love as a mother lies her passionate curiosity as a researcher. And thus, she had Yuuri, a Rank S Aptitude Communicator like Natsuhiko, cooperate in groundbreaking experiments like the Informational Field Self-Awareness Development Experiment.