Thread of Lies
우아한 거짓말 (original)
A seemingly happy family gets rocked by the suicide of the 14-year-old daughter.
Starring Kim Hee-ae, Ko Asung, Ko A-sung, Kim You-jung, Kim Hyang-gi, Yoo Ah-in, Sung Dong-il, Chun Woo-hee, Yoo Yeon-mi, Kim Jung-young
It's a drama and family movie, and has a rating of 7.1 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United States.