It's just a superstition.Aren't you scared if there's another you around, Kashima-san?KYAAAAAAAAAHThey leak it out a little.But I though you don't want sweet potato anymore...I wanted to go too, actually, so I don't mind at all.Ugh... I'm sorry for having you accompanying me to the toilet.Eek~~In other word, the protagonist becomes two—The next day, that man seems to die from unnatural cause.And standing there was the Doppelgänger who has all the same appearance.Ghost Stories