Sho Yotsuba presides over a talent agency managing several idols. He personally guides new recruits like Kanade Amamiya, explaining the challenging path to an official CD debut: winning first place in the Rookie Stage of Dream Festival and forming a unit.

To support Kanade's development, Yotsuba arranges an initial performance, pairing him with established idols Itsuki and Chizuru, and provides him with the agency's official uniform. His mentorship extends to casual moments, sharing malasada donuts while discussing the demands of the idol industry.

Monitoring agency matters, Yotsuba expresses concern upon learning of a scandal involving another idol under his agency, Shin Oikawa, specifically rumors about Shin having a girlfriend. He alerts Kanade to this development, highlighting his role in managing the agency's reputation and the well-being of its idols.