The phrase typically refers to specific themes within that industry. Because of this, it’s possible you are looking for one of the following:
Suzu sat on the edge of a crumbling concrete barrier, her digital camera resting heavy in her lap. Usually, her sister, , was a blur in the background, a ghost of a memory that Suzu was desperate to save but never could. In every loop, every fight, Hana was the collateral damage—the broken part of Suzu’s world that she couldn't mend.
– Honjo Suzu is a known actress in the JAV industry. A review saying "sister fixed" might refer to a plot where the "sister" role had technical issues (e.g., audio, subtitle, or video glitch) that were later corrected.