I notice you’re asking about “qos – wife3 ~the fragrance of black charm~.” This appears to be a specific adult-themed visual novel or eroge title (likely from a Japanese game series). I don’t have verified or safe-to-share information about this game—no walkthroughs, story summaries, character data, or download links.
If you meant something else—like a different game, a technical term (“QoS” as Quality of Service), or a non-adult title—please clarify. I’d be happy to help with useful text for gaming guides, network configuration, or general otaku culture within appropriate boundaries. qos – wife3 ~the fragrance of black charm~