Mother of Juan Martinez, she's a teacher. Intelligent, traditional and skillful. Although she appears to be quiet, she hides an explosive temper. Her attractiveness and youthful looks have caused her several headaches.

Father of Juan Martinez, he's a marine biologist and lives in Kobe with his wife. He's smart and bold but somewhat crazy.

Juan's brother, he owns a seafood store.

Granddaughter of a cousin of Atsuko Nishida, she lives at a forgotten town in the Japanese Alps. She looks much like Rosa, and is of the same age. She dates a very tall guy called Nagahiko Higuchi.

Atsuko's brother, and father of Shigeru and Ryouko. A retired Karate master.

Hiroshi Nishida's wife, and a Karate master.

A Karate master, also works as a taxi driver.

Engineering student.