A free program for Android, by KDDI株式会社.

The au Book Pass is an e-book service provided by au with a diverse lineup of more than 850,000 books.

au Book Pass is a convenient service that allows users to read books on their mobile devices with a simple account registration and payment.

The au Book Pass app allows users to choose the books that they wish to read from a wide range of genres. Users can choose from popular genres such as romance, horror, science fiction, fantasy, drama, and more.

The service offers many popular titles such as “One Piece”, “Chihayafuru”, “Love Continues Forever”, “It’s difficult to fall in love with Otaku”, “The Story You Read on the Day You Fell in Love for the First Time”, “Kimetsu no Yaiba”, “Detective Conan”, “Kingdom”, “Jujutsu Kaisen”, “Funeral for a Friend”, “Silent Don”, “The God of Darkest Love”, “Devil’s Daughter”, and many others.