How was a service that attracted 1.1 million visitors in just two weeks with zero advertising costs created? I’ll show you the entire process exactly as it happened: as a UX researcher with 8 years of experience, I turned an idea into a service in just 2 hours through vibe coding, then used real user behavior data to decide on the next experiments and monetization strategies. Ultimately, I’ll prove with real data from 1.2 million people that what matters isn’t the technical skill of building, but the ability to understand “what people want.”