This is the best place to legally get a "PDF-like" experience. You can buy the digital editions of the trade paperbacks (collected volumes).
Often overlooked, Google Play has the Titan Comics run. You can search the exact title and buy it with Google Play credit. These files are usually in EPUB format (optimized for flow) or fixed-layout PDF.
If you want to support the franchise , buy the Devil May Cry 5: Official Art Works book or the games on sale. The comics are not available legitimately in digital form.
Capcom frequently partners with Humble Bundle for charity events. They have released "Capcom Comics Bundles" in the past that included the entire Devil May Cry , Street Fighter , and Okami library for $15. If you see this, grab it immediately.
