Hōzuki's Coolheadedness is a Japanese manga series written and illustrated by Natsumi Eguchi. It follows the daily life of Hōzuki, a calm and collected aide to Enma, the king of the underworld. The story humorously explores the interactions between various mythological and supernatural beings in the afterlife, showcasing Hōzuki's unique problem-solving skills. The series has been adapted into an anime, which further popularized its quirky characters and comedic situations. It highlights themes of friendship, work-life balance, and the absurdities of life and death, all while maintaining a lighthearted tone that appeals to a wide audience.