What makes Human Griefman by Aion notable?

'Human Griefman' is notable for its role in introducing Aion to international audiences, helping to pave the way for future Japanese metal bands. The album received critical acclaim for its aggressive sound and complex arrangements, setting a high bar for subsequent releases in the genre. Released in 1990, 'Human Griefman' was Aion's debut album, marking their entry into the burgeoning Japanese metal scene. At this time, they were establishing themselves as a unique force within speed and thrash metal, drawing influences from both Western and Japanese styles.