My name is Mayoi Ayase. I have been working as an idol as a member of ALKALOID. Introducing someone such as myself would be extraordinarily boring to listen to, so please allow me to acquaint you with the ES Building instead. Equipped with a staff cafeteria and shower rooms... It is a place where idols spend much time, so the security is, naturally, impenetrable. However... as is the case in any place humans frequent, it has its own ghost stories associated with it.