Asu no Yoichi!

A 17-year-old swordsman named Yoichi Karasuma, highly skilled in combat but lacking in social grace, is sent from the mountains to learn modern life, including technology, clothing, and how to avoid angering women. Instead of martial arts, his new lessons focus on navigating interactions with four unconventional sisters at his new dojo, the Ikaruga girls, who defy traditional behavior. He must also contend with female students from a competing school, the Tsubame. Whether he can survive the challenges of these girls, particularly their unpredictable personalities, remains uncertain.