Seoul Cruising

It's hard to find the right sub to ask this question, so here I am. Other than gay saunas and cruise bars in Seoul, I'm looking for public toilets that are cruisy. I've specifically heard of a popular toilet in a subway station (I think) that's constantly cruisy. I will be traveling to Seoul soon, so I would appreciate any recommendations. If you prefer to message me instead of commenting, that's fine too. Thank you!