"Hozuki's Coolheadedness" is a Japanese manga series written and illustrated by Natsumi Eguchi. It follows the daily life of Hozuki, a calm and collected demon who works as an aide to Enma, the king of the underworld. The story humorously explores the challenges and absurdities of managing hell, showcasing various mythical creatures and their interactions. The series is known for its unique blend of dark humor and slice-of-life elements. It has been adapted into an anime, which further popularized the characters and their quirky adventures. The art style and character designs contribute to its distinct charm, appealing to a wide audience.