Dora is stubborn person, not accepting the fact that he couldn't become a Samurai, he's also very cocky about his physical build, he dislikes bullies and protects the weak, like when he took a fellow Samurai examinee to the back due to intimidating others, in the past, he fought bullies hurting others since he got some responses from the bullied victim's parents, thanking him for protecting their kids, Dora will come to help anyone even if he has to risk himself for others.