(I have translated the original from Japanese to English with the help of Google Lens and here is what I think is the supposed use for this device)
After someone acquired video footage of her pleasuring herself with a sex toy, they threatened her to publish said video together with a detailed profile of her on the internet. The only way for her to stop the Distribution of that video is to use the shown device for 450 hours within a 91-day span, which means she will have to spend at least 5 hours a day on it to delete the video.
Original source: https://www.pixiv.net/en/artworks/65611772#manga
