In World War 2 the Germans started to build up soldiers into cyborgs. PROTO, their first try vanished from the battlefield and was replaced by another man, ZERO, being betrayed by his best friend and killed to continue to live on as the "Nibelungendemon" and leader of G.H.O.S.T, the cyborg unit.

 

"Requiem et Reminiscence" around Proto was the background story of a GACKT tour in 2000. In the year 2009 he continued the theme with another tour and another protagonist, ZERO. In this story you should whitness what would have happened if PROTO and ZERO had met.