When Yoichi moves from the mountains to the city, he'll go from surviving the wilderness to surviving with four fierce females.

17-year-old Yoichi Karasuma is sent to re-enter society after studying martial arts with his father. But he'll have to survive his dealings with the Ikaruga sisters, and they don't really seem to understand how "proper" girls are "supposed" to behave.—Amazon Prime Video

Yoichi Karasuma has spent all of his life in the mountains, training in the Soaring Wind, Divine Wind swordsmanship style. Under his father's guidance, he is able to master the technique at the age of 17. With nothing left to learn, Yoichi is sent to a new dojo located in the city so he can continue to train and gain an understanding of modern society. Unfortunately, Yoichi has no idea how to act or speak to anyone in the present day and acts like a samurai, complete with odd speech and traditional clothing. As he goes to live with the Ikaruga sisters at the dojo, Yoichi, clueless on how to interact with others, is constantly hurtled in hilarious misunderstandings. Asu no Yoichi. follows Yoichi as he stumbles through his new life and tries to learn how to live in the modern world with his new family.—MAL Rewrite

After many years perfecting the art of fighting, Yoichi's sent to another town thinking he's going to study some new fighting techniques. But what he's really going to learn about are some more practical things, like how not to make girls to want to kill you. Unfortunately, that lesson is one Yoichi may not survive, as his new dojo is infested with the infernal creatures in the form of the Ikaruga sisters, and they don't really seem to understand how "proper" girls are "supposed" to behave.—Sentai Filmworks