Keiichi Hozumi is a thirty-year-old venture company CEO blessed with good looks, intelligence, family wealth, professional success, and natural charisma. He appears to have everything, but he has one critical flaw: he cannot sleep alone. He is deeply lonely. Every night he invites a woman into his bed, and every morning his secretary and former university junior, Ibuki, cleans up the mess. Ibuki has spent eight years suppressing his romantic feelings for Hozumi, watching him cycle through casual partners while handling his personal and professional affairs without complaint. The story begins when a drunken Hozumi casually suggests a threesome with a woman and Ibuki. The proposal is the final straw. Ibuki finally snaps, and his long-buried obsession erupts. Their relationship shifts from employer-employee to something far more complicated as Ibuki turns his devotion into a possessive, calculated pursuit. What follows is a push-and-pull romance between an oblivious, spoiled, and genuinely affectionate man who craves warmth without understanding its source, and a quiet, intense younger man who has spent years patiently weaving himself into every corner of Hozumi's life. The narrative alternates between both characters' perspectives, gradually revealing the origin of their dynamic in their university days, the reason behind Hozumi's extreme dependency, and the extent of Ibuki's long-term scheme to make himself indispensable. The central conflict revolves around whether Hozumi can recognize his own feelings for Ibuki and whether Ibuki's eight years of twisted devotion can transform into a mutual, healthy bond rather than a one-sided obsession.