Chobihige is a recurring spirit character appearing across the *Natsume's Book of Friends* franchise, including the film *Ephemeral Bond*. His initial form displays unbalanced proportions, with a head nearly as tall as his torso, accentuating prominent facial features like his small mustache (the source of his nickname) and a mole between his eyebrows. He typically wears a green kimono secured with a red obi belt.

A significant revelation shows his true form as a rare and magnificent white dragon. This dragon form retains his distinctive mustache, now elongated, and possesses exceptionally beautiful scales regarded by other spirits as symbols of good luck, especially when shed.

Personality-wise, Chobihige presents a complex duality. He consistently uses polite speech patterns, ending sentences formally with "-de arimasu," yet this politeness often masks inherent arrogance and pride stemming from his nature as a high-ranking dragon spirit. He views most creatures as inferior but paradoxically enjoys socializing and drinking with middle-class spirits, particularly the Dog's Circle group. He dislikes expressive faces and claims human children bother him, though he finds Takashi Natsume tolerable. He harbors secret competitiveness and a strong aversion to losing. His interactions frequently feature witty sarcasm and pointed teasing, especially directed at the spirit Madara (Nyanko-sensei), leading to regular, often humorous arguments.

His background includes a past incident where he discovered a beautiful shell on a seashore, crafting it into a treasured comb for his mustache. The eventual breaking of this comb caused him noticeable sadness.

Within the series plot, Chobihige first seeks Takashi Natsume's help regarding a human girl, Touru Taki, whose spirit circle drawings enable humans to see spirits, causing disruption. Demonstrating significant power, he easily breaches Madara's protective barrier around the Fujiwara residence to make his request. During events involving the spirit cursing Taki, he shows concern for Takashi's safety and remains by his side after he sustains an injury. Following this, Chobihige becomes a recurring member of the Dog's Circle, frequently visiting the Fujiwara household for drinking sessions. These visits, while intended as social or protective gatherings, often exhaust Takashi due to the spirits' boisterous behavior.

A pivotal moment occurs when Takashi and the Dog's Circle present him with a sparkling dragon shell fragment to lift his spirits after the loss of his comb. Unbeknownst to Takashi, the shell originated from Chobihige himself. Deeply moved by the gesture and effort, Chobihige confirms Takashi genuinely finds it beautiful. He transforms into his dragon form, declaring he will treasure this new shell comb forever and keep it longer than his first one, signifying a meaningful emotional connection with Takashi and the group.

In the film *Ephemeral Bond*, Chobihige appears as part of the Dog's Circle tasked with caring for the three miniature forms of Madara, created after he consumes a mystical fruit and falls ill. Alongside Hinoe, Misuzu, the Chuukyuu, and others, Chobihige participates in attempts to forcibly recombine the kittens, ultimately losing track of one and apologizing to Takashi for the failure.

His abilities reflect his high spiritual rank, allowing him to effortlessly bypass powerful barriers like Madara's. His rare and powerful dragon form commands respect and admiration from other spirits. Relationships define much of his role: his interactions with Takashi involve polite requests and mutual aid; his dynamic with Madara features constant bickering and sarcastic insults, masking an underlying, contentious camaraderie; other Dog's Circle spirits accept him as a regular, albeit sometimes arrogant, companion.