Retirement in Another World with the System

I started to conquer the entire universe with the God of War system. Hey, why am I so strong? Forget it, I'll take care of myself. Beep! Hello? Oh, boss God of War, please listen to my explanation. It's not that I don't fight, it's that they can't beat me. I'm already old. God of War: ^^, wait until I go back next time! Hey, don't, don't, I'll dare you next time! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.