Kakisuke is a recurring character in the Japanese hell setting, originally known as one of the companions of the legendary hero Momotarō. In the series, he is depicted as a monkey who, alongside the dog Shiro and the pheasant Rurio, now works as a torturer in the animal cruelty section of hell. This department is dedicated to punishing deceased humans who abused animals during their lifetimes.

In terms of personality, Kakisuke is generally portrayed as calm and sensible, giving him a more level-headed demeanor compared to his energetic counterpart Shiro. Despite his composed exterior, his character is deeply marked by a specific event from his past life. He carries a persistent and heavy guilt over having murdered a crab in a well-known Japanese folktale, an act that continues to plague him even in the afterlife. This internal conflict is a notable aspect of his character, setting him apart as more than just a simple demon enforcer.

His role in the story is primarily tied to his job in animal hell, where he and his fellow former pets serve under the demon Hozuki, the chief deputy to King Enma. Their employment provides a solution to their aimless existence in the underworld after Momotarō settled into a new role in Shangri-La. Kakisuke’s key relationships are thus with his companions Shiro and Rurio, with whom he works closely, and with his former master Momotarō. While his personal development is subtle, his character is a clear example of how figures from folklore and mythology are reimagined, showing a being who, despite holding an official position in hell, is still grappling with the moral weight of his own past actions as a living creature.