Ichiokunen Shugyou no Mujikaku Kensei ~Tada no Bou da to Baka ni Sareta Bannou no Jinki to, Kyokugen no Shougyou de Umidashita "Kenki" no Jinkaku de Isekai wo Attou suru~

Ichiokunen Shugyou no Mujikaku Kensei originated as a light novel series authored by Ibarakino. It belongs to the prolific Japanese web novel subgenre of 'isekai,' specifically within the fantasy action category where protagonists typically attain immense power through unconventional or extreme means, in this case, a century of training manifested through a sentient sword.

The narrative focuses on the protagonist's journey after being underestimated for his simple gear, utilizing the 'sword spirit' he cultivated to dominate an otherworldly setting. Like many titles in this category, it was first serialized on platforms such as Shousetsuka ni Narou, later receiving a physical release with light novel conventions including character illustrations intended to visualize the protagonist’s transition from an overlooked wanderer to a formidable force.