Yuuka Amato

Yuuka Amato is the treasurer of the Student Council Security Division, a senior at Tenbi Academy, and one of the supporting characters of the Maken-Ki! series. She is the young sister of Tomika Amato (Takeru Ooyama's homeroom teacher) who comes from a family of ninja's that specialize in espionage and ninpou. Yuuka is best friend's with the Security Division's president, Furan Takaki and it is implied to be a lesbian that holds romantic feelings for her. Yuuka appears to be carefree most of the time who teases Furan Takaki a lot (mainly displaying her underwear); however, she is very cunning, mostly encouraging activities of Maken-Ki that involve some kind of other work than that which needs to be done. The most obvious of these actions is the "match" between Venus and Maken-ki, where the players use broomsticks and soap while playing in the pool (using the grudge match to clean the pool). She also creates rules such that it would be unlikely that either side would win the match, as Akaya Kodai realizes. She later reveals that for many generations, the Amato family has been serving the Rokujou's as their oniwaban (ninja).