Six/Nine

Within the elite ranks of S&D Securities' Fourth Guard, an assembly of the most polished and deadly professionals money can buy, intelligence manager Taki Keiichi finds his carefully ordered world disrupted by a relentless newcomer. Yuuki, a reckless youth with no regard for protocol, has staked his entire future on a single, audacious goal: to bind himself to Taki. With the yakuza's attention already fixed on Taki due to a past operation, Yuuki forces the issue with a stark ultimatum—join him or end him. Intrigued by the boy's feverish sincerity, Taki offers a different solution: Yuuki can stay, but only as a personal bodyguard. What begins as a calculated concession, however, slowly evolves into a dark desire to dominate his willing, obedient charge, blurring the lines between protection and possession. While the heat intensifies around Taki and Yuuki, a different kind of tension simmers in the Intelligence Department, home to the unflappable Kogami Shinobu. Known as the department's number-one cool beauty, Kogami maintains an impeccable, professional distance from his partner, the laid-back and easygoing bodyguard Miharu "Shin" Shinnosuke. Kogami's refusal to let their partnership turn personal seems rooted in a deep-seated fear, yet when Shin abruptly redirects his attentive pursuit to a new person under his protection, the perfect detachment Kogami has cultivated begins to crack. The disruption forces him to confront the feelings he has so carefully locked away, threatening to dismantle the careful walls he has built around his heart. As these two volatile partnerships are tested, the story accelerates through a series of escalating chapters—from a dangerous third party to a ticking clock, from calculated measurements to a frantic race against time—building toward a complex web of alliances and betrayals that promises to redefine the very meaning of loyalty within the Fourth Guard. This is just the beginning of a high-stakes saga where trust is a weapon and every bond is a potential battleground.