Watch Full Movies The Relative Worlds Online for FREE in HD 720p on 123Movies. Download The Relative Worlds 123movies new website. Shin has shut his heart ever since his mother died when he was young. His childhood friend Kotori has been looking after him ever since. Now that they are in the third year of high school, and it seems like they can finally move forward, another Shin from another Japan has suddenly appeared in front of them.