Can anyone help me look for this manga I was reading a long while back, From what i remember the guy reincarnate as a demon lord, he is the weakest and he has a pot that if you sacrifice items in it will make minions for him. The sacrificed item I last remember was a sword I believe and it summoned a soldier from the past? He got two warring demon Lords to fight against each other whilst he sneaked into one of their base? Was the latest thing I remembered at the time as well as he was training weak minions? Thanks for your time and help