白

在他们面前的是一个类似于会说话的毛绒玩具的生命体，“白(Shiro)”。

摘自本作简介中该角色的段落

A white creature resembling a talking stuffed toy that suddenly appeared. It calls itself an envoy of the god Marenis and serves as the game master for the lessons at night. "I'm Shiro. I guess I'm kind of like a minion of the god Marenis." [Translated from the official website]

简介来自 VNDB