While some fan translation sites exist (e.g., Baka-Tsuki historically hosted translations), most have been taken down or are outdated due to official releases. Be cautious of malware on unofficial aggregator sites. For the best experience and to support the author, go with official eBooks.
Unlike many generic harem protagonists, Issei has a clear, unyielding goal: to become a "Harem King". His power growth via the "Boosted Gear" is a central, satisfying hook of the series. high school dxd light novel online