1001 Nights

1001 Nights specializes in the surreal and will make you feel like you're tripping hard on acid during its short, but sweet 24 minute runtime. It featues three different animation styles: regular cell animation, sketch animation on paper, and these weird motion tween moments, and it all looks incredible. Tenshi no Tamago features a lot of dark, gothic architecture and symbolism. The movie has little to no dialogue and is very slow but still manages to draw you into its world with its amazing character design and beautiful background art. Oh, and the music is really freaking good. If you're an art maniac looking for something that's a bit more "out there" with its art direction, then both of these are a MUST watch! Oh, both are also made by the same character designer behind a lot of the Final Fantasy games: Yoshitaka Amano! read more 

the art is very similar... 

Orchestral anime retelling of famous stories. Very atmospheric. 

the relationship/romance between the two main characters gives off the same vibes. it has also that trippy feels to it 

They both seem more like pieces of art than anime, having that dark, psychedelic, and surreal style and atmosphere with practically no dialogue. 

Both are made up with the help of paintings and thus are extremely artistic and symbolic. 1001 Nights is perhaps more surrealistic as it touches the world of unconscious... anyway, both are just stunning in the way the best masterpieces should be. 

Same artist, similar atmosphere. 

Incredible art and the overall fairytale-like feeling in both.  

Same artist, similar atmosphere. 

Both movies have elements of art in them: The Sensualist uses traditional Japanese art while 1001 Nights uses drawings. Both are psychological and highly erotic and introduce abstract things in order to uncover additional meanings. Besides, one of the influential methods in both is the harmonic synthesis of art and sound. Still, 1001 Nights is fully abstract while in The Sensualist story and abstract pieces interchange. As for me, both are striking. So if you've enjoyed one of them you might probably like the other.