Haruo Yoshikawa  

, 吉川春生

In the series, Haruo is the main male character who attends a regular junior high school and has an excellent attendance record. Despite not having any significant long-term goals, he hopes to live a healthy life. He lives with three sisters, none of whom are aware that they possess magical abilities. Although it's believed that Haruo also has latent magic powers, he is unaware of this and considers himself and his family ordinary. His siblings use magic memory erasing hammers to conceal their abilities from him, sometimes using up to three hammers at once. Despite being somewhat naive, Haruo values the well-being of others. He's in his first year of junior high school (grade 7) and is located in classroom B. "Haru" means "spring" in Japanese, as he is the eldest among his siblings.