Create an article in the library. Your article can have several pages.
Create a page for each comic page.
If you click on the image it brings you to the next page.
Library by Waindigo: http://xenforo.com/community/threads/library-by-waindigo.27529/
Simple Manga Comic Image Viewer: http://xenforo.com/community/threads/simple-manga-comic-image-viewer.14997/