Kentaro Miura, author and creator of the influential Manga “Berserk” died on May 6th at the age of 54, due to acute aortic dissection, according to an official statement on Twitter from publisher Young Animal Comics.

Miura is best know for his influential dark fantasy manga series Berserk, which he’d been working on the series since 1989. As one of the best-selling manga series of all times, the series had an impact to mainstream media since its debut. Many of its influence can be seen in video games and contemporary anime such as Castlevania and Demon Slayer.