My Pet-Monster Is A Human

In a world where monstrous creatures known as the "Necrophi" have emerged, threatening humanity's existence, a new organization is formed to combat the menace. Kayla, a young and unremarkable girl, lives in the shadow of her twin sister's perfection. In a shocking turn of events, Kayla is sent to join the organization in her sister's place.
During a fateful mission, Kayla's life is cut short. But months later, she awakens with a mysterious connection to a strange, monstrous creature. Unaware of its true nature, Kayla takes the creature in as a pet, naming it "Kael."
As Kayla navigates her new reality, she begins to uncover the secrets surrounding the Necrophies and her own past. But it isn't until a fateful encounter that Kayla discovers Kael's shocking truth: he is, in fact, a monster who has the power to shapeshift.
As Kayla grapples with this revelation, she finds herself inexplicably drawn to Kael. Despite the danger and uncertainty surrounding his past, Kayla begins to fall deeply in love with the man behind the monster.
With Kael by her side, Kayla embarks on a perilous journey to reclaim her life, challenge the forces that seek to destroy her, and unravel the mysteries of a world where monsters and humans coexist. But as their love grows stronger, Kayla must confront the darkness of Kael's past and the danger that still lurks within him.