My first romantic anime

After a long back and forth, I decided to watch the anime after all, although I thought beforehand that I might not like it. After reading the description, I suspected that it would only be a superficial character and that there didn't seem to be anything deeper behind it (after re-reading the anime description, I don't even remember why I suspected this)... Long story short: I'm overwhelmed by how great the anime is. The two main characters are so great that you can't help but love them. I also had to read all 161 chapters of the manga (plus some bonus chapters) immediately. Now I can't wait for more to come. And the wait is already hard, even though I just finished chapter 161. I didn't think I would like this kind of anime so much. Admittedly, I also had to shed a few tears during the last episode of the anime. Can anyone recommend something similar? Please only completed things, which are finished in the manga as well as in the anime adaptation.