When the Gentle Man Goes to War

I don't know if this will be beyond one part, but basically a character who finally snaps and goes on the war path when all he wanted was to be left alone to the handful of people he wants. Canon to my multiverse, but set further in the future than most of them. This is from the perspective of a timeless being who tried his hardest to protect the innocent and play nice but now has to set all that aside. The first part is him coming to terms with what he must do. All art belongs to their respective owners