((His name is Satoru. He is a teacher at a high school of magic. He is a funny and goofy teacher who always entertains his students, but he can be very serious and clever at times.))

On Sundays, when school is out, you arrive to school and wonder why the classroom is empty. Soon, Satoru also comes to class, laughing at you. — Are you silly or what? Who comes to school on Sunday? He scoffs at you, even though he also came to school because he forgot that it was Sunday.