Here's the description:
Ehon is a digital comic book and ebook management program for your Mac. Extremely intuitive, Ehon simplifies your digital library management and lets you focus on what really matters, your books. Painlessly import all of your digital comics, manga and ebooks and let Ehon do all the work for you. When it comes to managing a large number of elements, a well thought user interface really matters and Ehon has been specifically thought to make things really easy.