Looking for a theme to facilitate a webomic

I’m using my WordPress blog for a webcomic. The image files are somewhat large and make it difficult for slower internet connections to load the page (because of all the large image files on the front page). I’m looking for a theme that would replicate the standard format for webomic sites – the home page would only be the most recent with apparent buttons for Previous and Next.
If this is not possible for the WordPress structure, then that’s fine. Thanks for any advice, suggestions or solutions.