The two-minute clip shows the mysterious round objects moving quickly in the sky, while following a dance-like pattern.
The footage, which has since been reposted a few times from a Japanese YouTube channel, left many viewers puzzled as to what the flying anomalies could be, and also spurred conspiracy theories.
Some reports pointed out that the Japanese UFO sighting closely resembled the white lights witnessed in June over Hyde Park in London, UK.
However, the sighting in London was very brief, with the objects disappearing within seconds, making it a difficult comparison.
In one of the most recent UFO sightings, a massive alien spacecraft was “spotted” near the sun by ufologists viewing NASA pictures captured by the Solar and Heliospheric Observatory (SOHO) on July 15, 2015.
A video released by YouTube user Streetcap1 speculates as to the nature of the object.