Life as a Beloved Demon Slave in Another World

[Lustful Demon Marquis × Dying Slave Boy's Overprotective Love Story] As a child, Rin, a boy who suddenly transferred to another world, was branded as "useless" due to his lack of abilities and spent his days oppressed as a slave. At 18, heartbroken and desperate enough to seek a place to die, Rin was bought by Roy, the head of a marquis family and the strongest demon. Rin was prepared for death, expecting to be eaten or crushed by force. However, the role he was ordered to fulfill was to become a body pillow, "a vessel to receive Roy's excessive magical power." Roy, a lustful and overly energetic demon, despite not knowing love, cared for Rin's health and meals, doting on him like a pet. Rin, little by little, began to open his heart to that love—.