Alice to Therese no Maboroshi Koujou

Both shows teach you to accept negative experiences and changes as a normal part of the human experience and a necessary part of getting over trauma and moving on. Of course, both Alice and Bits deliver this in almost the same very bittersweet manner. 

Similar concept. Group of people are suddenly transferred to a world with strange rules, time stops and they don't know if they are real or an illusion - a reflection of the real world. 

Similar worlds with good animation and an interesting and romantic plot. 

Maboroshi really reminded me a lot about about Lost Voices, perhaps because they both had themes of separate worlds, both also dealt with topics of grief, passage of time, and mortality. 

Similarity with parallel worlds and the relationship between characters that do not belong to the same world. 

The anguish of both protagonists in exploring the world, with the desire to know what lies beyond the horizon. Female protagonists who come from the other side of the world and need to return 

Mysticism involving portals (cracks) to another dimension or parallel universe. Dragon-shaped smoke protecting the portals.