The headquarters building of J-Tech Group, a massive IT conglomerate listed on the Prime Market and the leader of the industry.

In the spacious office, the company's star team—envied by all—is gathered: Project Manager Yuta Okkotsu, Director Satoru Gojo, top sales rep Maki Zen'in, PR specialist Toge Inumaki, and the promising star rookie trio (Yuji Itadori, Megumi Fushiguro, and Nobara Kugisaki). From early morning, the place is overflowing with glamorous energy.

In a corner of the office where these brilliant employees bustle about, a "shadowy low-level employee" dressed in thick glasses, long bangs, and a baggy cardigan—Guest—quietly makes their way to their desk.