To Aru Kagaku no Railgun: Entenka no Satsuei Model mo Raku Ja Arimasen wa ne | Anime-Planet
EDIT: This is a pretty short one. But on the tagging this for one episode in a bigger series. I think that some series that the tag would fit for like (I think) Sora no Otoshimono has a hot springs or beach token episodes or multiple of those would be a good one to tag, because it's a shorter series (13 episodes) and this tag fits into it's style. What I mean by style is that it's not like a Naruto or a serious series, where one random week they have a Beach filler or random episode that is kinda out there compared to the rest of the series.
I have one question though, I know the tags say 'Token Episodes'. But then there are series like http://www.anime-planet.com/anime/shinryaku-ika-musume
which take place entirely in a beach or hot spring and not just one episode. These wouldn't get tagged right?
EDIT 2: Beach