KimiKiss Pure Rouge, Itsudatte Bokura no Koi wa 10 cm Datta. Recommendations
both are about high school students and their love stories. The two animes are about first love, with several interlaced love stories. also, their genres are similar and both have a romance with a bit of comedy.
one more similarity is that the two animes are about shooting a movie for a film club.
in my opinion, because Kimikiss has 24 episodes, its story and characters develop better than the Itsudatte Bokura no Koi wa 10 cm Datta.