Theory: Japanese are Aliens

Readers, I'd appreciate your comments on the theory that the Japanese are in fact aliens.

The arguments to support my theory are:

1. Japanese have eyes like in all the abduction testimonies (see image).
2. They live on a remote island.
3. Japanese don't laugh at the things we do, don't cry at things we do, don't eat the things we eat - they are different.
4. They are the most advanced technologically.
5. They are constantly documenting the earth - have you ever seen a japanese without a camera?