Yedami kissing haruto is a cheat part, I mean I'm so soft, that whenever I watched Harudam vids with that scene, Ruto's smile after the kiss gives me the chills really.. Thank you for this..
It was when Mashiho was trying to remove Jeongwoo's sticker during their running man episode, and since Yedam is also an XMAN like Shiho, he had to distract Ruto so they were like that. At least that's what I think it is? Lol I'm not really sure if during this time Yedam and Shiho knows that they're both xman so Yedam was trying to help. This is a late reply but I hope this helps.