It seems you're referring to a title or concept that combines Indonesian phrases ("Mertua Bejat Sama Menantu" translates roughly to "Depraved In-Law with Daughter/Son-in-Law") with Japanese film and lifestyle/entertainment themes, possibly from around 2011. However, there is no known mainstream or documented Japanese film from 2011 with that exact or similar title. The phrase appears to be a mashup of adult-themed Indonesian drama tropes and Japanese media.
Conclusion
For actual in-law conflict dramas (older, not 2011): -2011- Mertua Bejat Ngentot Sama Menantu Film Jepang 3gpl
Legacy:
Understanding the Film's Context
Exploring Japanese Lifestyle and Entertainment: A Glimpse into 2011 It seems you're referring to a title or
": A dramatic exploration of honor and family duty within a historical context. Chronicle of My Mother possibly from around 2011. However