The Savior Villain System of All Realms

Save all the villains from all over the world and accept them as their younger brothers. He is ruthless and shows no mercy to his enemies. If anyone stops me, I will kill him! It is your fault that you are weak! Incompetent introduction! Please read the text, you don't like to troll each other! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.