Fastkill started out in 1996 as a thrash metal act from Tokyo, Japan.

They produced several demos before releasing their first full-length Infernal Thrashing Holocaust in 2004. A well-received album by thrash metal fans and critics. They toured with the likes of Abigail, King's-Evil, Grim Force, Battletorn, Barbatos, Anatomia and Gigaton.

In 2007, they released Nuclear Thrashing Attack, and in 2008, a split with Crucified Mortals entitled Ghastly Affliction.