What's a story that was ruined by a new season?

I'll start:
1. Plum blossom shade ( honestly when it began, it Immediately became one of the my fav manhwas. Then season2 happened and it became so depressing. And of course the s1 wasn't a complete story but it was such a good good opening just to end up in a mess)
Ps: there were toooo many time skips it was hard to keep up.



2. Cherry blossoms after winter (really should've ended with season2 and it still would still be talked about like other classics but adding more and more unnecessary stuff to it ruined the manhwa)