"Pure Mail" is an adult anime series that delves into the complexities of online relationships and the consequences of digital anonymity. In Episode 1, viewers are introduced to Hiroshi, a high school student who leads a double life as a notorious internet troll under the alias "Yuu." Hiroshi's online persona is known for manipulating and deceiving others, particularly targeting vulnerable individuals through malicious emails. The episode takes a turn when Hiroshi encounters a mysterious girl named Ayumi online, who seems unaffected by his usual tactics. Intrigued and challenged, Hiroshi's interactions with Ayumi begin to blur the lines between his virtual mischief and real-life emotions. As their correspondence deepens, Hiroshi is forced to confront his own insecurities and the impact of his actions on others. The animation captures the duality of Hiroshi's existence, contrasting the stark, isolating glow of computer screens with the vibrant yet oppressive atmosphere of his school life. Themes of identity, remorse, and the search for genuine connection are woven throughout the narrative, offering a thought-provoking exploration of the digital age's darker facets. "Pure Mail" Episode 1 sets the stage for a compelling story that challenges viewers to consider the ethical implications of online behavior and the human need for authentic relationships.