I Became the Terminally Ill Youngest Son of a Villainous Family

※ This work is serviced simultaneously as a 15+ and 19+ rated version. Some scenes and story developments may differ depending on the age rating, so please check the rating before using. ※ This work contains elements such as violent acts, vulgar expressions related to the body, and coercive relationships. Please keep this in mind when reading. I possessed a beastman fantasy novel. As Ash, the terminally ill adoptee considered the disgrace of a snake beastman family! Magic, intelligence, and lineage. In the House of Serpent, where all three must be balanced to qualify as a candidate for the family head, Ash—who is not only terminally ill but also the sole adoptee—was destined for a miser...