The Good and the Bad

Power has two sides: the good and the bad. It is ruled by two kings. They have that powerful quirk that can destroy the entire world, but there is a catch. There are ten people that they should have under their control or power. These people are called "bridge." The two kings have power even without the bridges, but it is not enough for them to do what they want. If a king and a bridge are in his hands, he can generate very strong power.