1. The High School DxD light novel series has reached a significant milestone, with over 7.8 million copies sold worldwide. This popular supernatural series, which features a harem of beautiful demon girls, has amassed a dedicated fan base and continues to be a commercial success.

2. In addition to the impressive sales figures, the franchise has also released an official ASMR (Autonomous Sensory Meridian Response) video featuring the character Rias Gremory. This audio-visual experience, designed to provide a relaxing and immersive sensation, is likely to appeal to the series' devoted fans.

3. The continued success of High School DxD highlights the enduring popularity of the light novel genre, particularly in the realm of supernatural and harem-themed stories. The franchise's ability to captivate audiences across multiple media platforms, from light novels to ASMR content, demonstrates its strong brand recognition and the dedication of its fan community.