Chumimin, also referred to as Chu Mi or the Plant Daemon, is a supporting character in the anime My Daemon. Chumimin is a plant daemon that came into existence from a daemonium particle inside the head of Kento Tachibana, one of the main human characters of the story. This unusual origin ties the daemon directly to Kento from the very moment of its birth and places the character within the daemon population that emerged in the world of the series following the catastrophic event that blurred the boundary between Earth and Hell.

Chumimin's defining trait and most notable ability is the power to establish communication between humans and daemons. This function gives the character a distinctive role as a bridge between two groups that frequently mistrust or misunderstand one another. In a setting where human beings and daemons often come into conflict, the ability to open and maintain a line of understanding makes Chumimin a meaningful presence in the interactions between the two sides. Because of this communication-based power, the character is defined less by combat capability and more by the capacity to connect others, serving as a link rather than a fighter.

The character's relationship to Kento is its most significant connection. Having been born from a daemonium particle within Kento's head, Chumimin shares a direct and personal bond with him that is rooted in the circumstances of its creation. This origin places the daemon close to the human protagonist and ties its role in the story to him and to the broader attempts by humans and daemons to coexist or cooperate in the series' post-disaster world. As a plant daemon, Chumimin also represents one of the many distinct daemon forms that appear throughout the series, each shaped by the strange conditions that brought them into being. Further specifics about the character's inner personality, private ambitions, and long-term personal growth are not presented in the available material about the series.