Oliver Senaster was born in a peasant family. His father was a renowed legendary blacksmith that, despite his efforts, couldn't wash off the bloodthirst of his son, who ignorantly abandoned all he had and volunteered for the war in search of something he imagined grandious. Before departing, his father made him the legendary armor that, unbeknownst to his son, would make him survive two years stranded in enemy territory after his platoon was exterminated. Once he returned to his nation's military camp, after he had survived for two years alone roaming from battlefield to another, his armor, now rusted, made him be known amongst his comrades as the "Rusted Steel Knight", the legendary champion of the Seven Stars War. Any other piece of equipment would have been shattered after the terrors he witnessed. But the mighty armor endured. Once four months back to allied territory, he received the news that his father was suffering from a lethal disease and was on the brink of death. Oliver then deserted from the battlefield in desperation to spend his father's last days together with him. Upon two days after his arrival at home, his father passed away on his arms. The Rusted Steel Knight then hung his armor and, filled with regret, promised to master the blacksmithing, and live a life as his father once did.