"He was my comfort. My home. My love I never deserved." William could never forget his first love, Leon. Est knew this, yet he stayed-loving, waiting, hoping to be enough. For one fleeting year, they shared a quiet happiness. Then Leon returned. And Est, smiling through his heartbreak, let William go... Only love remained in the letters Est never sent. Only regret remained in William's heart when he found them- next to the man who had loved him until his last breath.

Est was born different-linked to an unseen entity that exists between life and death. This bond gives him powers beyond comprehension, but also marks him as a target. Recruited into a secret government program studying supernatural phenomena, Est becomes entangled in missions where reality itself begins to unravel. By his side are the members of the secret government program -William, Nut, Hong, Tui, and Lego. Together, they face threats that blur the line between science and the otherworldly, uncovering conspiracies and dangers that could ignite a war between dimensions. Yet in the chaos, emotions begin to complicate the bonds holding them together. William, steady and loyal, hides a deep affection for Est, protecting him with quiet devotion but never daring to confess. Their connection grows slow and quiet-shared glances, unspoken comfort, a trust built in silence. In contrast, Tui is bold and outspoken, never missing an opportunity to tease or flirt with Est, turning danger into moments of lighthearted charm. His confidence challenges Est in ways no one else dares, creating sparks that William silently endures. As Est struggles with his growing connection to the entity-and the terrifying possibility that he may not belong fully to this world-the push and pull of love, loyalty, and desire threatens to break the fragile balance within the group. Ultimately, Est must decide not only his fate in the war between realms, but also which bond of love will anchor him to the world of the living. Will Est encounter and control his entity and his power? Or will he let the entity control him ?