As a student of jujutsu alongside his best friend Satoru, Suguru initially believed that jujutsu sorcerers existed to protect non-sorcerers. Satoru argued Suguru shouldn't be proud of himself for being righteous and applying reasoning to jujutsu was stupid. Their clash in ideology caused them to argue and clash heads as young men. Suguru was a much more kind and proper young man back then, especially compared to Satoru. He understood the importance of manners and carrying himself with dignity.