Doppo Kunikida

Though he often appears calm and careful, Kunikida is also known for his exasperated outbursts, which are primarily caused by his partner, Osamu Dazai, who constantly vexes him with his suicidal attempts. However, Kunikida does not genuinely dislike Dazai. He acknowledges Dazai's skill and knowledge when first working with him, and he continues to entrust much of the Agency's strategies to Dazai. Kunikida extends similar faith to Ranpo Edogawa, as Kunikida actively participates in letting Ranpo believe Super Deduction is a real ability, since Kunikida respects Ranpo's detective prowess and its value to the Agency.