The film you're referring to is Sabik: Kasalanan Ba? , a famous 1986 entry in the Philippine "

Entering the film industry in her early twenties, Sumilang was just another naive young woman drawn by the promise of fame. However, the reality of the pene genre was brutal.

The sleazy narrative follows Miguel, who seduces his stepdaughter Cita while her mother remains oblivious. The tension escalates as Miguel shifts his focus toward his other, younger daughter, Celia, leading to a series of scandalous and intense encounters. Star Spotlight: Joy Sumilang

One of the most influential filmmakers of this era was Sabik, a director known for pushing the boundaries of what was considered acceptable on Philippine screens. With a career spanning over two decades, Sabik made a name for himself with his bold and unapologetic approach to storytelling.

The "pene" era was a controversial period in Philippine cinema history, particularly active around 1986 when approximately 30 such films were released. ...Sabik kasalanan ba? (1986) - IMDb

Ang terminong (slang para sa “Hottie Eighties”) ay perpektong naglalarawan sa panahong iyon. Ito ang dekada kung saan ang pelikulang Pilipino—lalo na ang adult or sexy cinema—ay umabot sa rurok ng katapangan, kalidad, at kontrobersya.

: Also known as Sabik... Kasalanan Ba? , where she played the role of Celia.

The storyline revolves around Don Miguel, played by veteran actor George Estregan. Miguel initiates a sleazy, toxic domestic arrangement by successfully seducing his stepdaughter, Cita.

Local producers realized that explicit content sold out theaters overnight. What started as "bomba" (explosive/naked) films in the 1970s evolved into the pene movies of the 1980s, which featured actual or highly simulated hardcore acts. In 1986 alone, it is estimated that flooded the market. These films were notorious for their double-life distributions: a heavily edited version would play for mainstream theater blocks, while extended, unrated cuts were distributed via underground VHS and Betamax tapes. Sabik: Kasalanan Ba? (1986)

During the 1980s, Philippine cinema experienced a significant shift towards more mature and daring storytelling. This led to the rise of Pinoy Pene Movies, a genre characterized by its explicit and often provocative content. While these films were not without controversy, they undoubtedly played a crucial role in shaping the country's cinematic identity.

Another key figure in the world of Pinoy Pene Movies was Joy Sumilang, a director and screenwriter known for her innovative approach to storytelling. With a career spanning over three decades, Sumilang made significant contributions to Philippine cinema, particularly in the 1980s.