Shion’s Role in TenSura and the Keychain That Captures It

Shion Flat Keychain from That Time I Got Reincarnated as a Slime, Kodansha Official

A Fabric Flat Keychain with Official Credentials

This is a die-cut flat keychain shaped and printed from synthetic leather or a similar fabric material, cut to follow Shion’s silhouette and detailed with white stitching around the outer edge. The hardware consists of a metal split ring and a swivel lobster clasp — straightforward and practical for attaching to a bag, a zipper pull, or a keyring. It is not an acrylic standee charm or a plush keychain; it belongs to the category of fabric flat character keychains, a format that became a reliable fixture in the Japanese anime goods market from the late 2010s onward. This type of keychain appears regularly through Animate stores, at events such as AnimeJapan and Comiket, and via official publisher storefronts.

The tag on this keychain carries the Japanese title of the series alongside Kodansha’s name, establishing it as an officially licensed product. For collectors who follow the TenSura merchandise scene, the distinction between official licensed goods and unlicensed items is meaningful — and this one comes directly from the series’ manga publisher. The exact manufacturer is not confirmed from available information, but the Kodansha Official designation confirms it passed through an authorized licensing channel. Based on the product style and Kodansha’s involvement with TenSura since the manga launched in 2015, this keychain was produced after the anime’s debut in 2018.

Who Shion Is in the World of TenSura

Shion is a Kijin — a class of powerful demon-like beings — and she serves as the personal secretary and close aide to Rimuru Tempest, the slime protagonist at the center of TenSura’s story. She is one of the most prominently featured recurring characters across the manga and anime, appearing in both high-stakes combat sequences and in the day-to-day life of the nation Rimuru builds. Her defining visual characteristics are a long mane of purple hair and a tailored suit-style outfit; in battle, she wields a large great sword. That combination of striking appearance and narrative importance has made her one of the most recognized figures in the series.

In Japanese fan popularity polls covering the TenSura cast, Shion consistently places near the top among female characters. That ongoing fan engagement has a direct effect on the merchandise landscape: she appears across a higher proportion of official goods than many other characters in the same series. The purple-dominant color palette in her design lends a visual distinctiveness that carries effectively even on a small-format item like a keychain.

From Web Novel to Global Franchise

TenSura traces back to a web novel by Fuse, which was adapted into a light novel series published by Micro Magazine’s GC Novels imprint starting in 2013. The manga version, drawn by Taiki Kawakami, began its run in Kodansha’s Monthly Shonen Sirius in 2015. Studio 8bit brought the property to anime in October 2018, with the first season concluding in March 2019; a two-part second season followed in 2021. Spin-offs including TenSura Diary have extended the universe alongside the main story.

Internationally, TenSura has built a substantial audience through streaming platforms including Crunchyroll, with active fan communities in English-speaking countries, Europe, and across Southeast Asia. It is consistently ranked among the most popular titles in the isekai genre — a genre defined by protagonists who are transported or reincarnated into a fantasy world — and the franchise extends well beyond manga and anime into games and a broad range of official goods. Kodansha’s licensing work, including this keychain, is part of that wider merchandise ecosystem.