Lu Blue

Lu Blue is a colloquial term, primarily used in specific online communities, referring to a feeling of sadness, disappointment, or melancholy associated with the cancellation, delay, or negative reception of highly anticipated content featuring the character "Lu" in the video game Honkai: Star Rail. The "Blue" portion of the term alludes to the color blue, which is commonly associated with feelings of sadness. The term gained traction among players actively following the game's updates and roadmap, and who were particularly enthusiastic about the potential release of playable "Lu" content. It is a relatively recent term and its usage is largely confined to online forums, social media groups, and streaming communities dedicated to Honkai: Star Rail.