Well, considering I showcased Japanese mythological creatures once or twice when I was in third grade or so on some annual celebration or something and know 90% of the Touhou cast, I do know about Japan and its mythology, I just made a joke.
Anyways, I like the debuff weapon idea, but can the buffs stack? A few myrmidons with Defense lowering swords could cripple even the most powerful of Generals and although that might take as much time as normally killing a General, it still removes a part of the risk imo.