Ren Narita operates as an outsider sports scientist specializing in para-athletic sports, scouting and developing athletes with physical disabilities for competitive para-sports. He provides tailored technical training and strategic guidance to maximize their physical capabilities across four disciplines: wheelchair basketball, track and high jump, goalball, and paralympic swimming, preparing them for national competitions.

Assisted by his robotic aide Tama, Narita employs practical adaptation and innovation in training, utilizing specialized equipment like a uniquely designed ball. His mentorship extends beyond physical coaching to address disability-related challenges, fostering athletes' competitive growth.

Throughout the series, Narita remains a consistent professional presence across all four sports arcs, focused strictly on technical expertise and para-sports advocacy without personal backstory evolution.