is a Japanese light novel series written by Ezogingitune and illustrated by DeeCHA. It was serialized on the user-generated novel publishing website Shōsetsuka ni Narō from June 2018 to January 2021. It was later acquired by SB Creative who began publishing it under their GA Novel imprint in February 2019. A manga adaptation illustrated by Chako Abeno and with composition by Kitsune Tennōji began serialization on Square Enix's "Manga Up!" manga website and app in August 2019.
Media.
Light novel.
Written by Ezogingitune, "I Became a Legend after My 10 Year-Long Last Stand" was serialized on the user-generated novel publishing website Shōsetsuka ni Narō from June 21, 2018 to January 15, 2021. It was later acquired by SB Creative who began releasing it with illustrations by DeeCHA under their GA Novel light novel imprint on February 15, 2019. Seven volumes have been released as of July 2022.
Manga.
A manga adaptation illustrated by Chako Abeno and with composition by Kitsune Tennōji began serialization on Square Enix's "Manga Up!" manga website and app on August 3, 2019. The manga's chapters have been collected into seventeen "tankōbon" volumes as of May 2025. The manga is published digitally in North America by Comikey and by Square Enix via their "Manga Up! Global" app.
Reception.
By May 2025, the series has over 4 million copies in circulation.