Meet Suzuki Mika, teacher at Okitsu High School. Mika-sensei is a good teacher, but she has a small problem... literally. Although she's 27, she is only 148 cm tall, and has the face of a child. As a result, it is often difficult for Mika-sensei to get anyone to take her seriously. (Source: ANN)

The Seto no Hanayome OVAs are new stand alone shorts with characters from the series and also two new ones. It is now the third year of school, San and Luna's dads are still being over protective. All the while Nagasumi has his hands full trying to keep everyone around him under control and rescuing damsels in distress. (Source: ANN)

During his summer vacation, middle school student Nagasumi Michishio travels to the Seto Inland Sea. One day, while swimming at Mio Sun Beach, his leg suddenly cramps. No one is close enough to notice his desperate screams for help, and so he sinks into the ocean, where he is left to drown alone. Just as he loses consciousness, however, a mermaid appears and saves his life. That night, Nagasumi is visited by his savior, a girl who introduces herself as Sun Seto—a mermaid from a yakuza family. As it turns out, under mermaid law, a mermaid whose identity is revealed to a human must be punished by execution. To avoid this harrowing outcome, the Seto family propose a solution: Nagasumi must marry Sun or die at the hands of Gouzaburou, Sun's father and boss of the Seto clan. Faced with no other option, Nagasumi takes her hand in marriage. Now, the newlyweds face the difficult task of keeping their relationship secret. Between Gouzaburou's unending attempts on Nagasumi's life and the eccentric antics of a slew of antagonists, a genuine and innocent love blossoms between the pair as they adapt to their new life.

It's girls, gangs, and cars in this adaptation of the 1985 manga in Young Magazine, by Lullaby for Wednesday's Cinderella-creator Michiharu Kusunoki. Local punks steal cars, switch the plates, and sell them, but not without racing them for a while against rival gangs. The anime continues the story where the 1987 live-action movie starring Kazuya Kimura left off. (Source: The Anime Encyclopedia)