Silence Warrior

This summoning is similar to Yataghan Spirits but it only uses 1 circle with one purple flame in it. It summons 1 of 3 warriors, but this specific one is an assassin. He is hardly ever detected and if the target does detect him it will be too late by then. He wears a black cape and has a sword that can be infused with Yaichi's chakra. The only way to get rid of him is to seal him in a barrier or if Yaichi releases the summoning