Mr. Hasegawa is a minor character in Baka to Test to Shoukanjuu, working as a Mathematics teacher at Fumizuki Academy. He's best known for getting caught up in Class 2-F's schemes—most memorably when they kidnap him on his way to Class 2-E and force him to supervise the first Summoner Test War. It's pretty typical of the chaos that defines the series, honestly.
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