Beryl Gardinant calls himself a humble old man, content teaching swordsmanship at a small dojo in the countryside, until a former student arrives with news that upends everything: the Liberion Order of Knights wants him as their special instructor. Moving to the capital forces Beryl to reconnect with the students he once trained. They have gone on to become elite knights, an ace wizard, and an adventurer at the highest guild rank, and none of them plan on leaving their old teacher alone. This manga adapts the original light novel for WEBTOON's full-color vertical format.