

11-year-old Yusuke and his classmates camp in the woods and see a strange light. They discover a small metallic object like a robot which talks, calls himself Tetra and knows Yusuke's name. Tetra can create wonderful gadgets but actually has to save the world with Yusuke's help from extraterrestrials with bad intentions.

Shingo Katori
Soichiro Kanzaki

Miki Sakai
Noriko Kinoshita

Anne Suzuki
Misaki Kinoshita

Yuya Endo
Yusuke Sakamoto
Kyôtaro Shimizu
Hidetaka Ono
Yuki
Toshiya Matsuoka

Katsumi Takahashi
Yusuke's Father

Kuniko Asagi
Yusuke's Mother

Kinzō Sakura

Takashi Matsuo
Misawa

Megumi Hayashibara
Female Researcher / Voice of Tetra

Kazue Tsunogae
Snack Shop Lady

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