Put on your special suit and dive into it. Please be careful. If you want to survive, you have to burn the rope before the entities score two eruptions.

     When the first of them erupts, the last one erupts too, but there is only one eruption. The reason is that it doesn't even do anything but knows how to speak to you. Bonsoir is one of these so called "intelligent" castle and even knows how to speak to you.