 If you liked
Pastel
|
 ...then you might like
Yume de Aetara
|
The settings are slightly different, where Pastel is more on school life and teenagers, whereas Yume de Aetara is more between working lives and adults.
However, they are similar in the slow romance type, and the gradual building of relationships, with a lot of hurdles along the way. Also, the side characters are gradually being built on along the chapters, and they make progress in their lives too, including romance. Both have conservative main male and female characters.