What is the strange object in bellow pictures?

1. A ceramic figure discovered from ruins of ancient civilization that had sunken into Kamo-river of Kyoto 25,000 years ago.
2. Octopus-type Alien who visited Imperial Palace in Kyoto last year.
3. UFO that landed Nenbutsu-dera Temple in western Kyoto last summer.
4. Wizard of Izu.(Izu district is in Shizuoka prefecture).
5. Young comedian of Japan.
6. Prime minister Hashimoto (in fact, Invader Alien, called Nyantoro).
7. God.
8. Newly discovered work of Vincent van Gogh.
9. A model of Senju-Kannon, the Goddess of mercy with a thousand arms.
10. A clay figure discovered from ruins of an ancient capital in Nara prefecture.

Sorry, there's no correct answer above.
So, what is the truth?
Please imagine and write to me.
I'll write you back the truth.