Midori is often sullen and in low spirits. He often makes inappropriate remarks and rants, and formal and honorific speech are his weakness. He has a complex about his height, and tries to eat less or avoid eating meat so as not to grow any bigger. He has a tendency to feel restless when there is unfinished work, and would rather stay up late until it's completely. This relates back to how there's a side of him that actively wants to work hard and integrate into RYUSEITAI, the unit he belong.