90-nichi no Koibito - Doukyo Keiyaku kara Hajimaru Aisare Seikatsu

At work, Shizuha is known as a competent, no-nonsense professional who takes her career seriously. In reality, however, she is socially awkward and completely inexperienced when it comes to romance. When a stalker begins targeting her, her boss, Inori Hatsukura, steps in to help—and presents her with an unusual contract: a three-month fake engagement and shared living arrangement, after which he plans to transfer to the company's U.S. branch. After careful thought, Shizuha agrees to his proposal. Now forced to play the part of a happy couple under the same roof, both of them find themselves navigating a situation that feels all too real—and neither can predict what the next ninety days will bring.