Webtoon that you dropped because the plot got boring?

New Webtoon reader here. Just want to what are webtoons you have read that started off with an interesting premise, and the execution was fine in the beginning (like the first few episodes or season), but fell off afterward. I don't want to end up investing my time in webtoons, and later regrettably drop them because they got boring. So far, I haven't had this issue yet, so I wish it doesn't happen to me anytime soon.