Reiguu Muko Life wo Mankitsu shiyou to Shitara, Dekiai Route ni Hairimashita!?

One day, ordinary office worker Kaoru Kusakabe (28) dies in an accident and is reincarnated into the world of a BL Omegaverse novel. Kaoru awakens as Chris, an Omega who has become the concubine of Allen, the powerful Alpha King. However, Chris quickly realizes that his new identity comes with dangerous complications in this hierarchical society where Alphas and Omegas have distinct roles. Determined to protect himself in this unfamiliar world, Chris decides to adopt a cold and distant persona, hoping to avoid drawing unwanted attention. But as he navigates the treacherous dynamics of the royal court, he finds his carefully laid plans challenged by unexpected developments - including the king's own surprising reactions to his changed behavior. (Source: Shueisha, translated)