Freshmen and new female office workers often turn to the internet since they don't know anyone in their new environment. Among various online platforms, dating apps are especially popular due to their ease of making friends. However, since these girls are still unfamiliar with social rules and etiquette, they tend to act naively and without caution online. Predatory men target this vulnerability, hunting them relentlessly day and night. Today's online world has become a playground for such malicious individuals. In this situation, what can these girls possibly do to protect themselves?