さくのしん

The guardian deity of the shrine which was broken during the events of "Shrine of the Guardian Deity". While not strictly a School Youkai, he is the leader of the animal spirits in the area.

He looks like a fox, but he claims he is really a lion. He has a calm disposition, but he is truly a coward. He says he can fight when it counts, but he won't listen to the ghost story of curses in the night. He loves pounded fish cakes. The infirmary nurse gives them to him as offerings. 

Although he bears a very strong resemblance to Sakutarou from Umineko no Naku Koro ni, the two aren't related.