Kizano and Ayato have met in some occasions yet besides that, the both of them are friends with Taeko. Taeko is a very beautiful girl so no wonder she's friends with the both of them.

Kizano didn't like Ayato at all! He was so emotionless that Kizano found him creepy. He thought that Ayato needed more emotions so that he could find more friends! Or else people might think he's from the Occult Club or something.