Japanese live action drama based on the manga series "Gokuaku Ganbo" by Takashi Tajima.
Plot of the series: When Kaoru Kanzaki was a child, her mother’s restaurant went bankrupt. Her family became poor afterwards. Since graduating from middle school, Kaoru Kanzaki has worked hard and lived a thrifty life to escape poverty. As a result, she is able to save 1 million yen. Kauro though lends her colleague 1 million yen, which leads her to fall heavily in debt and her life spiral downward again. At that time, Kaoru Kanzaki happens to meet members of a shady organization called Koshimizu Management Consultants. She struggles to get out of her desperate situation.
More information: http://asianwiki.com/Gokuaku_Ganbo