Ep 4. My First Roommate

In this episode of Red Data Girl, we see the main character, Izumiko, move into the dorms for her first year of high school. However, she quickly realizes that she will have a roommate, Mayura, who also happens to be her best friend's sister.

As Izumiko begins to settle into her new room, she starts to feel uneasy and senses a strange presence. Mayura, on the other hand, seems completely unfazed and even amused by Izumiko's reactions. The two girls have very different personalities, with Mayura being outgoing and energetic while Izumiko is quiet and reserved.

Despite their differences, they begin to bond over their shared love of the band, Love Machine, and even attend a concert together. However, things take a strange turn when Mayura's personality suddenly changes and she starts acting aggressively towards Izumiko.

As the episode progresses, we learn more about Mayura's past and how it's connected to the strange presence that Izumiko has been sensing. With the guidance of her guardian, Miyuki, Izumiko sets out to uncover the truth about what's really going on with Mayura.

Throughout the episode, we see Izumiko struggle to navigate her new life as a high school student while also trying to understand her powers as a "Red Data Girl". We also see how her relationships with those around her, particularly her friendship with Mayura, are impacted by her powers.

Overall, this episode is full of suspense and mystery as we try to unravel the secrets of Mayura's past and the strange presence that's been haunting Izumiko. It also explores themes of friendship, identity, and coming-of-age as Izumiko tries to find her place in the world.