ブレイブリーデフォルト ブリリアントライツ is a free Android game developed by SQUARE ENIX Co.Ltd. It is an offline app that allows users to browse through the story and character information of the "ブレイブリー" fantasy RPG series. The game has achieved a total of over 3 million copies sold and downloaded worldwide.

In this game, players can enjoy an original story featuring new four warriors of light, even if they are new to the series. The app provides access to main storylines, character stories, and event stories that were available during the service period.

Please note that the game is in Japanese and requires Android 7.0 or higher with at least 4GB of RAM. It is important to mention that the game does not offer battle or character development features.