He also a more bubbly and flirty personality, often flirting with visitors or patients or joking around with Mudano even when he clearly doesn't reciprocate it. He likely acts happier and plays himself up as a way to not give his patients any bad feelings. He also enjoys acting familiar around people, even if he just met them, even if it leads to others getting frustrated with him. With his blood, he's able to heal injuries on other Oni. However, with the way his blood works, the more he needs.