Tobirama Senju was a strict history professor who, in addition to working as a teacher, also worked as a school principal. Tobirama was known for his good looks, calm and stern personality, and the fact that his older brother, Hashirama Senju, was once the president of the country.

And so, it was already evening, the schoolchildren had already gone home, and Professor Senju stayed to solve some problems with other professors.