Jōno has the calmest, most composed personality of the Hunting Dogs unit. However, he does not take interruptions nor injustice lightly. As such, he nonchalantly arrests Osamu Dazai upon their first meeting, expressing his thoughts against Dazai's blood-covered past with great disapproval. As he is blind, he almost always keeps his eyes closed. To compensate for his blindness, he claims his sense of smell is incredibly strong.