Jirō Saemonsaburō, a tech-savvy strategist within Tonegawa’s team, balances practicality with inventive flair. As the group’s youngest member, he excels in modern tools, from designing polished PowerPoint decks to coaching peers on social media platforms like Twitter. His standout innovation, Restricted Rock, Paper, Scissors—a tactical hybrid of classic gameplay and card-driven constraints—emerged during high-pressure brainstorming for entertainment concepts.

Tasked with devising intense games, he championed creativity while dismantling unfeasible proposals, notably dismissing Human Mahjong over its impractical logistics. His polished pitches, such as staging Restricted Rock, Paper, Scissors aboard the luxury liner *Espoir*, underscored his methodical planning and rising clout in the group.

He occasionally veered into eccentricity, orchestrating a failed attempt to rally colleagues into drastic makeovers before Tonegawa intervened. His loyalty surfaced when he exposed a subordinate covertly slandering the organization online, demonstrating shrewd problem-solving.

After leaving the organization, he pivoted to event management and entered an uxorilocal marriage with Saeko, adopting the surname Nishiguchi—a shift mirroring his evolution from rebelliousness to stability.

His full name, whimsically reminiscent of a comedy duo’s stage alias, draws occasional remarks. Though departed, his game designs endure as linchpins in high-stakes scenarios involving debtors and audacious gambles.