Masaki Jogasaki is an eighth-year super senior at Kyoto University who presides over the movie circle. He cultivates a handsome and popular public image but privately harbors lecherous tendencies, including deep attachment to his love doll, Kaori. This attachment features prominently in his interactions, especially when others target Kaori during the "proxy-proxy war" conflict.

He maintains an ongoing rivalry with fellow super senior Seitaro Higuchi, marked by elaborate schemes dubbed the "proxy-proxy war." Jogasaki frequently acts as an antagonist relative to the protagonist, often aided by Ozu in ways that obstruct the protagonist's goals. Ozu simultaneously assists the protagonist, weaving complex layers of manipulation.

In one significant incident, Ozu and the protagonist orchestrate Jogasaki's humiliation. They sabotage his film project, replacing his intended biographical screening portraying himself as "Alexander the Great" with manipulated footage that exposes his flaws and vulnerabilities, revealing his susceptibility despite his perceived authority.

Jogasaki's relationship with Ozu shifts when he designates Ozu as his chosen successor to continue the proxy-proxy war, signaling a degree of trust or strategic alliance. His character reappears in the sequel *The Tatami Time Machine Blues*, where his rivalry with Higuchi endures without significant new personal developments beyond this persistent dynamic.