I'm a Swordsman in the Countryside

In a remote countryside, the humble Frame runs an old dojo. After winning the championship of the Principality Swordsmanship Competition at the age of fourteen, he chose to inherit his father's legacy. The days when he aimed to reach the peak of swordsmanship were gone. He compromised with his own strength and lived leisurely. More than ten years have passed, and I have become accustomed to obscurity, and I don't even know what level my strength has reached. On the contrary, those disciples have already become famous overseas. "I recommended you, teacher, to be the exclusive special instructor of the Knights, and you were successfully approved." He originally thought that it wouldn't matter if he ended his life peacefully in the countryside, but since then his fate has changed dramatically. Meet new partners, face more difficult and powerful enemies, and reunite with former disciples who have grown tremendously. "For me, an uncle who has passed his prime, this burden is really too heavy..."