Chiyako Koishikawa

Chiyako Koishikawa (小石 川ちやこ Koishikawa Chiyako) is the former wife of Youji Matsuura and the mother of Yuu Matsuura who works for a cosmetics company. She also gets along well with Miki Koishikawa, yet tries to not be pushy on her, which Miki appreciates a lot. She was close to her former boss, Yoshimitsu Miwa, but was perceived to be having an affair with him and her relationship with Jin Koishikawa was ruined. She was pregnant by Jin, but he dumped her before she could tell him and the strain of the situation proved to be too much and she suffered a miscarriage, which led Yuu to think that Youji is not his true father.

Biography
In the manga, Chiyako works for a maker of Western-style liquor while in the anime, she works for a cosmetics manufacturer.

Yuu Matsuura
Yuu is Chiyako's only son whom she had with Youji.

Miki Koishikawa
Miki is Chiyako's step daughter.

Yoshimitsu Miwa
Yoshimitsu Miwa used to be Chiyako's boss at the company that she used to work at. He fell in love with her but she turned him down because she was already dating Jin during her college years.

Jin Koishikawa
Jin was Chiyako's ex-boyfriend and the two used to date back in college. She and Jin married after she divorced her ex-husband Youji.

Youji Matsuura
Youji was Chiyako's ex-husband.

Saku Koishikawa
Saku is Chiyako’s son with Jin.

Rikka Matsuura
Rikka is the son of Youji and Rumi.

Appearances

 * Marmalade Boy
 * Manga
 * Anime