"From Old Country Bumpkin to Master Swordsman" (also known as "Old Country Swordsman") is based on a light novel by Shigeru Sagazaki, with illustrations by Tetsuhiro Nabeshima. A comic adaptation by Kazuki Sato is also in serialization, and the series has surpassed 7 million copies in total circulation. It's an "old man rise to glory fantasy" where Beryl Gardinant, who raised many disciples as the master of a countryside swordsmanship dojo, is called to the royal capital to become an instructor for the knights.

Episode 3: "The Old Country Bumpkin Survives a Fierce Assault"
[Synopsis]
Surena, a former disciple and top-rank adventurer, visits the knight corps to borrow Beryl. The request involves the training of novice adventurers, and she is the leader for that. Beryl visits the Adventurers' Guild to hear the details and is questioned about his ability to fulfill the request, leading to a match with Surena to prove himself. Beryl is not keen on this development, but it seems Surena is filled with deep emotions—

(C)Shigeru Sagazaki, Tetsuhiro Nabeshima/SQUARE ENIX, From Old Country Bumpkin to Master Swordsman Project

English