Mutual Tunnels is a hand-drawn animated short film directed by Jun Cen. The original music is scored by Jason Charney.
The film seems to be executed in a linear way. However it is not until the end of the story that people realize they have come back to the beginning of the story, where the hands of the two protagonists are holding one another. It forms a structure similar to a Mobius Strip. If our common sense about the linear characteristic of time is correct, questions are raised. What is actual and what is virtual in this film? Are all the fragments the crystals of time that reflect both past and present? The answers to these questions are left for the audience.