Sakuragi's honey; Kuki is very smart and clever. He is a very competent honey and always gives some advice to Yuzuru. Kuki is very loyal to Sakuragi and vows that he will do anything for his master. He never cuts his long hair because he does not want to cut away the hair that his master (Nayuta) has once touched. He is bad at tying his hair so his master helps him.

(wikipedia)