Oyobi Desu ka!? Hacka Doll

A mobile application called Hacka Doll provides users with a tailored news feed based on their preferences. Upon first use, users answer a few basic questions, allowing the app to filter content according to their interests. Continued use enables the app to analyze reading habits and refine the feed over time. The app's personalization system is represented by three characters known as Hacka Dolls. Each has a specific role: one focuses on entertainment and navigation, another specializes in anime, and the third is an informed otaku.