Plot

11 year old Yusuke, and his classmates are camping in a woods when suddenly they see a bright light streak over the treetops and into the woods.
The boys takes off into the woods towards the light.
There in the ground, growing, they find a small round metallic object.
Just as Yusuke reaches to touch the mysterious object up pops a set of eyes and the object says;

"I am Tetra, I meet Yusuke".
Startled Yusuke replies "Your name is Tetra? Cool!"

Tetra is kept from adult eyes in Yusuke's closet.
Tetra being creating wonderful gadgets using "never-seen-before" technology.
It would appear Tetra was designed with some ultra-high-tech artificial intelligence.
But where this Tetra come from and what is Tetra's purpose?
As the relationship grows between Yusuke and Tatra, these questions are answered.

Characters

• Yusuke Sakamoto (坂本裕介 Sakamoto Yūsuke) - Yusuke is the main character. Yusuke hides Tetra in his room.
• Tetra (テトラ) - Tetra is a robot who has highly advanced artificial intelligence. Tetra came from the future with the keyword "juvenile".
• Soichiro Kanzaki (神崎宗一郎 Kanzaki Sōichirō) - An electronics shop owner who introduces Yusuke to Tetra. Kanzaki is the only adult that the children trust with the secret of Tetra.
• Misaki Kinoshita (木下 岬 Kinoshita Misaki) - One of Yusuke's friends. She wishes to connect Tetra to the internet.
• Noriko Kinoshita (木下範子 Kinoshita Noriko) - Misaki's sister in law. Noriko becomes one of Soichiro's allies in his Physics research.
• Toshiya Matsuoka (松岡俊也 Matsuoka Toshiya) - Misaki's playmate.
• Hidetaka Ohno (大野秀隆 Ōno Hidetaka) - Hidetaka is Toshiya's "gopher." Hidetaka, who is thought to be the source of information at his school, is easily able to find information and proves handy to Yusuke and his friends.

Cast

• Megumi Hayashibara
  Megumi Hayashibara
  is a Japanese voice actress, singer, radio personality, and lyricist from Tokyo. She is currently affiliated with Aksent. Her nicknames include: Megu-san, Megu-nee, Bara-san, Kakka, and Daijin...
  
   - Tetra (voice) / Female Researcher
• Shingo Katori
  Shingo Katori
  is the youngest member of SMAP, a popular Japanese idol group from the agency Johnny & Associates, and he is from Yokohama, Japan. Shingo Katori has acted in several dramas such as Three Peace, and has appeared as a voice actor in such anime series as Akazukin Chacha, in which he voiced the part of...
  
   - Soichiro Kamizaki
• Miki Sakai
  Miki Sakai
  Miki Sakai , born 21 February 1978 in Shizuoka, Japan is an actress and J-pop idol singer.As a teenager she made her feature film debut in the 1995 Shunji Iwai film Love Letter playing the role of Itsuki Fujii as a young girl...
  
   - Noriko Kinoshita
• Anne Suzuki
  Anne Suzuki
  is a Japanese actress.A model since the age of three, she got an early break in her acting career at 12 when she starred in the Hollywood film Snow Falling on Cedars with Ethan Hawke. She was next featured in the action movie Returner opposite Takeshi Kaneshiro, and won the Best New Actor at the...
  
   - Misaki Kinoshita
• Yuya Endo
  Yuya Endo
  is a Japanese actor and singer. He is known most notably for his role as Ryoma Echizen in the Prince of Tennis musical series, Tenimyu. He is also part of a young men's stage acting troupe, D-BOYS, which perform in various skit-like performances, and is currently the group's leader.-Career:Endo's...
  
   - Yusuke Sakamoto
• Kyotaro Shimizu - Hidetaka Ohno
• Yuki
  Yuki
  Yuki, Yuuki, Yuhki or Yūki are romanizations of various Japanese given names or words...
  
   - Toshiya Matsuoka
• Katsumi Takahashi - Yusuke's Father
• Kuniko Asagi
  Kuniko Asagi
  is a Japanese actress and television presenter. Her real name is .- Early career :She attended Kokubunji High School in Tokyo, and Gakushuin University. Her resume includes Tokyo Disney Resort advertising, shown widely when the park opened.- Personal Life :...
  
   - Yusuke's Mother
• Kinzoh Sakura
• Takashi Matsuo
  Takashi Matsuo
  ' is a Japanese tarento, narrator, disc jockey, actor, and columnist from Kobe, Hyōgo Prefecture. His pet name, as well as his former stage name, is '. He is currently attached to Furutachi-Project. He is a graduate of the Osaka University of Arts's graphic design course, and is the chairman of...
  
   - Misawa
• Kazue Tsunogae - Snack Shop Lady
• Teruo Takeno - Byoid (voice)

External links

• Official Website
• Juvenile at the Internet Movie Database
  Internet Movie Database
  Internet Movie Database is an online database of information related to movies, television shows, actors, production crew personnel, video games and fictional characters featured in visual entertainment media. It is one of the most popular online entertainment destinations, with over 100 million...