Invincible Through Life

I don't know the road ahead, I only know that I will become stronger! Protect my family! Protect your loved ones! Love your friends! He is an angel, but on the other side he is a murderous demon. He has a system to fight monsters and upgrades to play the game, and he can explode equipment and so on! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.