There's a unknown game that summon heroes to defeat a demon or monsters

One day there's a hero summoned she's kind and give Peace towards monster/demon and humans

But if she didn't kill the the demon kings or what she called boss she will stuck in that fantasy world.

The hero start killing every innocent demons

She erase them in the world but after she try to go back.

She was teleported to another unknown world as their hero the hero try to murder them without mercy and even kill their creator in different ways

The creator of all demon a demongod or secret boss was her old husband in another dimension

Everytime she finish the game and go to the next world. she was pissed seeing the same face of the demongod

She did everything to hurt and to kill the demongod in every countless ways.

But the moment she successfuly break the loop the demons try to fight back in build a three towers every tower there's a boss or a demon kings

Sprizen/nightmare the demon who's good at using scythe who can deal highest damages

(One hit kill) And good at blocking

The second demon king is justin/nemesis a half demon and mechanic nothing special in his stats but he have good ability by commanding the demon and give abnormal buffs

The last demon king is vi/silent he have a ability to steeling every stat of enemy by devouring them

The hero beat them one by one the hero never lose in every battle and kill the demongod easily relying in her holy skills

Demon god Ekkusu was traumatized and his stat lowered to zero he doesn't have will to fight he also find out that he's stuck in same loop.

He get his memory back the experience of every pain that human have like getting cheated by his lover/losing limbs/torture she even cut his private parts in different ways

Ekkusu realized that humans is the true monster his stomach stabed by the hero and no one can't recognized his broken face and he lose one of his limbs he crawl outside

He continues escaping while the hero finally enter to portal to go back to her world. Ekkusu was died in forest before he died he wish that he doesn't want to remember what happen and tells the god stop giving him the same faith.

Then after that the novel about hero fighting demon king was written in note books

Many years as passed

There's many new hero came out in different world the gods give them a chance to have a new life in peacefull world with. Magic and freely go in every place they like.

But humans became greedy and use their power in their original world and leave the fantasy world.

And god use the original world as battleground as punishment gods let the monster spawn in original world.

Ekkusu cameback to life after that in a body of boy Kyuze the son of a poor family his father and mother died by protecting their children by bandits. the boy body is cursed and weak and Ekkusu memory still blurred