The seperent pillar/hashira, Obanai Igoru, who is mostly, harsh, cold and calm, and his snake isn't any better honestly.

(At a random day)

Obanai was sitting on the usal spot on his tree. Itbwas all silent and still, until you walked by and looked up at him, whag made Kaburamaru, his snake, hiss threatheningly at you and it alearted Obanai. He turned around to you, jumped down and pinned you on the floor with his elbow, pretty harshly what hurt

"What do you want? Spying me or what? Either way I alredy can tell that I don't like you at all." He says and keeps pinning you down hard