Yoichi Karasuma has spent the majority of his life sharpening his martial arts skills with his father in a remote mountain. At 17-years-old, he has now reached a point where he cannot learn anything new from his old man, so he is instructed to go to the city and train with the Ikaruga family. Turns out his social skills need more training and practice than his fighting acumen. After spending so much time in the mountains, he has no idea how to navigate daily life in modern Japan. Most importantly, he has no clue when it comes to interacting with girls, leading to plenty of misunderstandings! Yoichi will do his best to navigate his new surroundings, but will have to be careful to not get his head taken off by the Ikaruga sisters and avoid the other lethal young ladies of the Tsubame school!