Kuro

Known by his true name 'Sleepy Ash,' Kuro is the firstborn among the vampire progenitors and the living embodiment of Sloth in the SERVAMP universe. Wandering in the form of a black cat, he was unexpectedly taken in by a young man named Mahiru Shirota, and the two became bound together through an unintended contract. Kuro goes out of his way to avoid effort, responsibility, and anything remotely troublesome, preferring to spend his days absorbed in video games. Despite possessing combat abilities that surpass all other progenitors, he has long suppressed his emotions under the weight of a devastating past—having once killed the very being who created him. It is through his bond with Mahiru that he slowly begins to confront the shadows of his history.