Sanpeita Kobayashi made a Childhood Marriage Promise ten years ago. To this day, he still keeps her photo around in his wallet. His life is about to change. One day, a Super-DeformedPowered Armor calling itself Kemeko blasts into his life and declares Sanpeita to be her husband. He now has to live with Kemeko, who was apparently sent to protect Sanpeita from the Mishima Electric Corporation, a Mega Corp. who are after his power. It doesn't help matters that everyone around Sanpeita is some degree of crazy.Based on the manga of the same name, adapted into an anime by Hal Film Maker. The anime covers the first two and a half volumes of the manga, which is in its eighth volume as of early 2010.
Tropes in this series include:
Action Girl: Ryoko Kurosaki, who manages pretty well in combat against Kemeko. As it turns out, she's also a student in Sanpeita's class, she just rarely shows up; she also has a cute cat sidekick.
Alien Among Us: Ryoko, MM, and all Mishima Electric Corporation employees. And probably Haya-chan, too.
Frank's 2000 Inch TV: Mishima's 2000 foot headquarters screen. It's the biggest thing in the city, and dwarfs every building around it, spanning what looks like at least ten city blocks across.◊
Frying Pan of Doom: Tamako, Sanpeita's little sister, effectively turns a frying pan into a weapon when she goes to fight Kemeko, believing her to be a burglar. Later in the manga, she uses two of them chained together nunchuku style for her Electrical Parade Attack.
New Transfer Student: Subverted when a new transfer student is predicted - then Kemeko bursts through the window. Kemeko is not the new transfer student, though. That role belongs to a named extra completely unrelated to the main plot.
In episode 9 she reveals that she is the "third-generation boss" — i.e she could be in line to head a Yakuza family.
Onee-sama: Tamako considers Kemeko one, of all people.
Panty Shot: Strangely, there's more shown in the first five minutes of the OP than there is in the first five volumes of the manga.
Paper-Thin Disguise: Used unsucessfully by Miura, using a cat mask and claiming to be "Neko Mimi Maid Kamen". Later, she dresses as Kemeko (with a Sanpeita dummy made of cardboard boxes that almost fools Izumi).
Parental Obliviousness: Fumiko Kobayashi, Sanpeita and Tamako's mother, is a mangaka and frequently pulls all-nighters. She's oblivious in general, but the all-nighters don't help.
The Reveal: In episode eleven, M.M. is revealed to be Mishima Mei, daughter of Mishima Souichirou, the founder and first president of Mishima Electronics, whom she killed to steal his ultimate invention, the Nanoball (according to Vanilla). This also makes Kemeko a Phlebotinum Rebel. Using the power of Mishima to fight Mishima.
The Seven MysteriesThe Eight Mysteries: Ryoko Kurosaki is one of them. (The fifth layer of the vaulting horse is the first, go figure.)
Standard Snippet: Beethoven's "Ode to Joy" is played when Sanpeita is lucky enough to see Izumi's bikini top fall off right in front of him. The version played even has a chorus backing it, making the moment verge on Mundane Made Awesome territory.
The Stinger: Just who the hell was that Miko girl? No to mention the marching army shot...
Super-Deformed: Kemeko and Kiriko in particular, though the cast in general certainly fit.