Yamato Houtsuin
Satan
He seems to have some concern for Hibiki and perhaps think of him as a friend, since he received his death clip and even going as far as saving him directly, though he won’t admit it himself. Another person that he often talks to is Anguished One, but their relationship is complicated. Despite Anguished One referring himself as Yamato’s ‘old friend’ and gave him informations about the invasion, Yamato is rather hostile towards him and referring to him in a rather harsh and spiteful way in Japanese (He usually refers people with ‘Omae’, but referring Anguished One with ‘Kisama’). Whenever talking to Anguished One, he’s always sounds somewhat annoyed, especially whenever the latter implies his concern for Hibiki, calling him a ‘Blabbermouth.’