Sugimoto Wears Cinnamoroll Ears in This Golden Kamuy Collaboration

Sugimoto x Cinnamoroll Acrylic Keychain — Golden Kamuy x Sanrio, by Bandai

What This Item Is

This is an acrylic keychain from a licensed Golden Kamuy x Sanrio collaboration, produced by Bandai. The charm is a printed acrylic panel cut into a custom shape — a square base with a rounded tab extending from one side — suspended on a ball chain. Two red snowflake motifs decorate the tab, while the main face features a red-to-pink gradient background with pine tree silhouettes. A chibi (super-deformed) version of Sugimoto Saichi, the protagonist of Golden Kamuy, is illustrated wearing his trademark military cap and Cinnamoroll’s signature floppy ears, in a winter camp scene complete with a fireside hot pot. The phrase “SUGIMOTO x CINNAMOROLL” is printed directly on the design, making the crossover nature of the item explicit. The piece is sealed in its original shrink wrap. Bandai, one of Japan’s largest character goods manufacturers and part of the Bandai Namco group, produced the item; Sanrio holds the rights to Cinnamoroll.

Golden Kamuy: The Series and the Character

Golden Kamuy is a historical adventure manga by Noda Satoru, serialized in Weekly Young Jump from 2014 and concluded in 2022 across 31 volumes. The story is set in Hokkaido and Sakhalin during the late Meiji period. Its two central characters are Sugimoto Saichi — a veteran of the Russo-Japanese War nicknamed “Immortal Sugimoto” for his survival against all odds, with his military cap as a consistent visual signature — and Asirpa, an Ainu girl with deep knowledge of the northern wilderness. The series is recognized for holding two things in tension: serious, unflinching combat and careful, respectful depictions of Ainu culture, hunting, and traditional cuisine. Hot-pot meals cooked over campfires appear throughout the manga as a recurring and meaningful motif, which is why the winter campfire scene on this keychain reads as thematically grounded rather than decorative. The anime adaptation ran for four seasons, with the final arc airing in 2024, and international streaming through Crunchyroll has given the series a substantial following well outside Japan.

Cinnamoroll, Sanrio Crossovers, and Japan’s Character Goods Tradition

Cinnamoroll is a Sanrio character introduced in 2001, recognized by its white coat, large drooping ears, round face, and blue eyes. It consistently places at the top of Sanrio’s annual character popularity polls and carries strong name recognition internationally, reaching audiences well beyond dedicated anime fans. On this keychain, Cinnamoroll’s most defining trait — those oversized ears — has been transplanted onto a chibi Sugimoto, a technique common to Sanrio crossover designs that signals the collaboration at a glance without requiring both characters to occupy the same scene.

Pairing a gritty historical action manga with a soft kawaii Sanrio character is a familiar strategy in Japan’s character merchandise market, where cross-IP collaborations routinely pull together two distinct fan communities. Golden Kamuy and Sanrio have partnered on more than one occasion, with Bandai handling production on documented series. The acrylic keychain format has been the dominant medium for anime and manga character charms since the mid-2010s, found in specialty anime retailers, convention venues such as Comiket and Anime Japan, and gashapon machines across Japan. This item was produced for the Japanese domestic market.