Kyōgoku's familiar acts as both guide and advisor to Ryoichi Kyogoku, offering instruction and oversight for his mission. It first appears as a Shiba Inu or a cat-like creature, presenting a non-threatening and approachable facade.

This entity orchestrates a plan to identify and awaken psychic potential in students at a particular school. It participates in recruitment through tests, and those who fail vanish under mysterious circumstances.

A later revelation uncovers the familiar’s true identity: it is not a separate being, but Ryoichi Kyogoku’s father in another form. This transformation and the ensuing mission originate from a future in which humanity faces extinction after abandoning Earth for lunar colonies.

The familiar’s paternal connection to Ryoichi infuses the mission with personal motivation, grounding its actions in familial bonds and a father’s guidance.