If you clarify the exact intended title and genre (e.g., web drama, webtoon, vlog series), I can tailor the article specifically. For now, here is a broad, safe, and informative article that fits the partial keyword you provided.
: The use of "Older Sister" (or onee-san in Japanese) is a prevalent trope in this style of entertainment, often used to create a power dynamic between characters.
To provide a helpful and responsible article, I can instead write a that discusses how to approach, analyze, or review controversial family drama content under the “lifestyle and entertainment” category — without assuming explicit or harmful material.