1x17 - Boogiepop and Others

Tanaka Shirou finds a place in the floor that looks like it may lead somewhere else, so he and Habara Kentarou want to go explore it, but Sakiko was asleep on top of the entrance. They manage to wake her up and manage to get into the crawlspace, but nothing there seems to have any connections with the King of Distortion. Suddenly, the entrance closes and Sakiko yells at them, saying that she won't let them get in the way of the King of Distortion. The entrance now won't budge, leaving Kentarou and Shirou trapped. Then, they hear the sound of something shutting...