Riko Sakaki is one of the twins who lived in another of the institutions of the "Birdland" project, namely the Smile Duck. They have a bad past behind them: they are unwanted daughters of a woman who had a clandestine relationship with a man who was already married. After their mother's suicide, seeing themselves abandoned and mistreated by everyone, they decide to take revenge against the adults who betrayed them, creating disorder and giving many problems to the structure itself. They are later adopted by a Yakuza and will use his power to pursue their revenge. Together with other kids from these institutions they found the OEDIPUS CLUB with which they organize their "attacks". They will give a lot of trouble to Onizuka but the latter together with the help of his two pupils Kikuchi and Kanzaki will be able to change their lives by giving them back their smiles.
Trivia[]
- The Sakaki twins can be distinguished by their hair: Miko's bangs go to the right (her left), and her hair is lighter. Riko's bangs go to the left (her right) and her hair is darker. Note that the hair direction is reversed in the Black Diamond miniseries, however in that they are easy to tell apart as Riko has pigtails and Miko wears her hair long.