Boss Is Super Strong, But A Coward

Protagonist who traveled through another world turned into a skeleton solider. The male protagonist is a novice. The hero is full of protagonist halo and various buffs. Protagonist aura , max critical damage, hyper luck! Amazing! Hero OS: Master looks at me so terrifyingly! Is he going to eat me! ! Great Demon King OS: It’s a hero! ! Go away! don’t beat me up!