For relaxed and peaceful vibes I would definitely recommend the following;
Postman To Heaven (2009)
One of the best Romance movies made in a very long time, pacing of the film is perfect and the atmosphere gives you a very relaxed feeling.
Summer Time Machine Blues (2005)
Similar vibe to Little Forest, you will definitely enjoy its peaceful narration and humor.
Spring, Summer, Autumn, Winter... and Spring (2003)
This is a film where you just have to sit back and enjoy every minute of it, the directing combined with the cinematography will blow you away. The symbolism gives you a greater insight into the meaning of life, if that might be a theme that would interest you.
My Love, My Bride (2014)
Simple, lovely, sometimes funny it's just the right combination to make a Chill movie.
Architecture 101 (2012)
The same as above, very chill romance vibes.
Sunny (2011)
Definitely worth checking out, one of my favorites.
I hope these will be to your liking, enjoy! :)