 If you liked
Persona 3 the Movie 1: Spring of Birth
|
 ...then you might like
Little Busters! Refrain
|
Both shows is about a group of friends, who have to overcome their fears and face their problems. Both has a melancholic feel to it.
Persona 3 all movies fit this description, but especially the fourth movie (Winter of Rebirth) felt the most similar to Little Busters!: Refrain. They were the most serious ones, with heavy themes.