1h 37m
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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
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
Tamaki Ogawa
Misaki Kinoshita, 20 years later
Isao Takeno
Byoid (voice)
Hidetaka Yoshioka
Yusuke Sakamoto, 20 years later
Koh Takasugi
Toshiya Matsuoka, 20 years later
Jay Kabira
Hidetaka Ono, 20 years later