Invincible from Seeing the BOSS's Health Bar - Chapter 1020 - 450: Endgame Night Rain of the Green Demon Arc (Part 3)

After a long time in the darkness, a lost soul is transported to another world, and there the soul is given another chance and is reborn as a boy...In a world of swords and magic, Zaos is given another chance after hearing an unknown voice asking him to protect someone. While he couldn't remember many things about his old life, he still decided to live his new as much as possible. Even though it looked like he was destined to do something, Zaos chose to follow his own path as much as possible.He tried that... but it looked like the machinations of destiny won't give him much option. Weird things were happening in the kingdom he was born, and before he could imagine... Zaos was throw in the middle of a war in which some were trying to revive the god of the world, and others were trying to prevent it. Zaos will fight in this war while he also looks for the person he is supposed to protect.The story, all names, characters, and incidents portrayed in this production are fictitious. No identification with actual persons (living or deceased), places, buildings, and products is intended or should be inferred.

Reborn into the Marvel world and become the son of the boss Jin Bing, what about the prince of the underground forces?

Don’t panic, the Black Shadow Corps provides the most loyal subordinates!

Twelve spells give you extraordinary power!

The eight demons will let you master the supernatural powers of overturning rivers and seas!

If you want to challenge, line up and come one by one!

- Description from novelbuddy

Being sucked into a fantasy world that nobody leaves doesn't sound half bad to Cain. He was a high school dropout with a drinking problem, living off disability due to his poor health, so it's not like he had much to lose except a few faithful friends he didn't talk to enough.

After a long night of drinking, Cain wakes up looking at what he believes to be the character creation screen of one of his beloved virtual reality games, but with no recollection of having purchased it. His unwitting choice to use the Random Character Creation option, unaware that the choice would be irreversible, sends him into this new world as a Puppet Master, a Summoning based class nobody else in the starting zone has ever heard of.

But as he soon realizes, this is no game, him and hundreds of others have been brought to another world with no instructions, no clear goals and no way home. It's a second chance to live a good life, but what will Cain be able to make of it?