Hellcats

Hellcats is a 2008 South Korean romantic comedy film about an extended family of three women from different generations—the fortysomething interior designer Young-mi, the 27-year old screenwriter Ah-mi, and the high school student Kang-ae -- who are all engaged in dilemmas regarding love and sex.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.