It sounds like you're referring to a or thematic element in storytelling, possibly for a game, novel, or film. The phrase "forbidden legend chopsticks relationships and romantic storylines" suggests a few intertwined tropes:

Reconsidering a Cult Classic: The Visual Style of Sex and Chopsticks

But in the realm of "forbidden legends," this geometry is often the source of the curse.

Released on , the sequel takes a darker, more dramatic turn.

This report summarizes the details for the Hong Kong Category III film series The Forbidden Legend: Sex & Chopsticks

In modern romantic storylines, we often chase the "power couple" dynamic—two strong individuals. But the forbidden legend suggests a darker reality: that true romance is the loss of autonomy. To love is to become half of a tool. You are no longer useful on your own; you are merely a sharp stick without leverage. The legend warns that to intertwine your life with another is to render yourself incomplete in their absence.