The church knows they don't know have many strong powerholders like the four maou or the Grigori, so they come to the conclusion to make their own super solider a project lead by the creator of the Holy Sword Project.
An unfortunate orphan is taken and is experimented on using the super solider serum that they created, and the soul of a dead high Angel is fused into his soul granting him the powers and wings of an Archangel oh and did I forget to mention he has the sacred gear, Blade Blacksmith.
One day the Male oc breaks free and escapes along with Yuuto Kiba however they don't meet they escape at different points. The church not wanting their weapon to be gone send their best warriors Griselda Quarter, Xenovia Quarter, and Irina Shido but they don't know why they are supposed to capture the oc.
Meanwhile the Male oc finds shelter with a couple of supernatural users who decide to teach something to survive eventually the church find him, but he narrowly escapes and finds his way to the Grigori where he trains in weapons, holy magic, stealth, and combat using these new skills the Mc becomes a supernatural mercenary to make himself a living while also trying to find his purpose he also owes Azazel a Favor for taking him in.