Inga No Sakana

"Ryouichi complied with everything I asked of him."
Cousins and childhood friends, Issei and Ryouichi. A distorted master-slave dynamic developed between Issei, the domineering heir of a company president, and the melancholic, ever-obedient Ryouichi. Surrendering to the beloved Issei, Ryouichi allowed himself to indulge in pleasure. However, after several years, as both of them find themselves working at the same company, could their relationship be starting to transform?