Juvenile

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.

Science Fiction

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)

Kenji Motomiya

(Man)

Adam Chrny

(Agent B)

Tamaki Ogawa

(Misaki Kinoshita, 20 years later)

Isao Takeno

(Byoid (voice))

Jerald K. Torferson

(Agent A)

Hidetaka Yoshioka

(Yusuke Sakamoto, 20 years later)

Koh Takasugi

(Toshiya Matsuoka, 20 years later)

Jay Kabira

(Hidetaka Ono, 20 years later)