erunosuke is very observant of and obsessed with fear, telling Josuke the only reason he attacked was that he wanted to see his sign of fear, growing to the point he become cocky about it. He sees people as objects, as when he captured Tomoko Higashikata to lure in Josuke, kept a taxi driver trapped for later use, and constantly blackmails Josuke to toy with him. Although Terunosuke claimed that his actions are not intended to harm Josuke, Tomoko and Koichi, he is not above threatening their lives just to intimidate his victims.