Navigating the 'Highschool DxD' manga can be a bit confusing since it intertwines with the light novels and anime adaptations. The main manga series, illustrated by Hiroji Mishima, follows the light novel's storyline closely. You should start with 'Highschool DxD' (2008), which covers the first arc. After that, jump into 'Highschool DxD: Asia and Koneko’s Secret Contracts?' for some fun side stories. The manga diverges a bit in later volumes, so if you want the full experience, I’d recommend checking out the light novels afterward—they’re packed with extra details and character insights.
If you’re a completionist, don’t miss 'Highschool DxD EX,' which explores alternate timelines and what-if scenarios. It’s a wild ride, especially for fans of Issei’s chaotic energy. Personally, I love how the manga captures the over-the-top action and humor of the series, though some arcs feel rushed compared to the novels. Either way, you’re in for a treat—just brace yourself for plenty of fan service and epic battles!