Haiyore! Nyaruko-san W – 07

「プールサイド、血に染めて」 (Puurusaido, Chi ni Somete)
“Color the Poolside with Blood”

If there is anything that we can take away from it [this episode], it would be that if you have a problem with someone the best way to deal with it is to trap them inside of an inter-dimensional room and remove any way to leave it.