A typical Japanese seishun eiga anime that tugs efficiently at the heartstrings. With an atypical sci-fi premise, director Makoto Shinkai tried to be unconventional but ended up still being rather predictable and unsurprising, keeping in line with the genre
What worked was its portrayal of the main characters and the pacing of the story. The two leads were well-liked, albeit the scenarios that they were thrown into were cliched. In addition, the story established the premise quickly and set up the emotional baggage efficiently such that the audience gets involved fast.
Just accept that this is a YA anime and the logic that goes along with it, and it will be easy to escape into the story. The animation was gorgeous and really makes one want to go to the Japan.