Idk if you’re still curious but Shindong is telling them about his shower filter tool that he did not know how to use at first so he kept buying a brand new one when all he had to do was change the filter. Yeo Jin said it’s a shame he didn’t know how to use it probably and that she also uses the same tool. Then they started to tease her by saying that “you use the same tool?” as in the one in shindong’s bathroom. The whole team keep trying to put them together haha. And then shindong shows them his dive gear that he doesn’t do anymore because he couldn’t overcome his fear of water. Yeo Jin and Se Yoon love suffering tho. And the rest is kinda straight forward. Hope that helped if you still needed it