Izumi

Appears in "Afterlife Jaunte," "The Kaguya Paradigm," and "Love Before Planets."

A genius inventor studying pseudo-science. His research in college was about the "Jaunte theory" and he was able to invent the "Take-You-Anywhere Door."

He has feelings for his coworker Nayotake who frequently presents him "problems that can't be solved." He was later given the challenge of creating a komainu stew which, if solved, grant him Nayotake's hand for marriage.

He also has knowledge of the planet bomb and the Planetary Gear Mechanism.