God of Systems: Maker of Heroes and Villains - Chapter 5: Unlikable Landlord; Good Bye

I am Ye Qing. Lucky I found a [Monster Factory] application.

After dying prematurely from an incurable disease, Yuka Hikano finds himself in a mysterious realm filled with endless doors, each concealing divine gifts from powerful deities. He is not alone—others who have met the same fate of death stand beside him, unaware of the trials that await.They are put through various tests and eventually transmigrated into different worlds. But these worlds are nothing like the Earth they once knew.For Yuka, however, this apocalyptic world feels eerily familiar. It is a realm of endless war, devastation, and chaos—a world he once played in a game. Certainly not the kind of place one would wish to be reborn into.From infancy to adulthood, he must gather strength, knowledge, and allies to survive the horrors that lurk ahead. But when he awakens a system granting him a power beyond imagination, he soon realizes that blessings can also be curses.[You have gained Infinite Mana.]Infinite Mana...?What could possibly go wrong?

Luck is limited and when villains and heroes hoard it, extras lose it.An ambitious villain defeated and killed far too soon, and a heroic group that couldn't prevent humanity's extinction, find themselves back in the past.Their battles and stolen opportunities cause consequences unknown to them, impacting the lives of all those around them, especially extras, moreso one named Neville. Unbeknownst to him, his fate is greatly influenced by the 'main characters'.He'd seen it all, gangsters, politicians and their mistresses, arrogant celebrities, even bratty heirs. But nothing prepared him for the night his client was involved in an 'accident'.Right after he was summoned by his boss who fired him and accused him of being involved but since they couldn't prove it only his license was revoked.After getting out of the building, his boss tells him that the client's family demanded to meet thehim, hoping for some answers and closure.But before going there he needed to pick up the client's eldest daughter...After that encounter his world went through changes his family pushed him to the edge and the supernatural became natural and he had to adapt to his strange new abilities!

When MC was reliving a picture of a goddess, he died. Only meet the goddess, but instead of torturing him to eternity, she gives him wishes. And make him reincarnated in the Overlord world.As the name suggested, this is multiverse Fan fiction, that means MC will travel through different world like Marvel, DC, High School DXD, My vampire Diaries (may be) , Demon Slayer, etc.first world: Overlord (Chapter: 1—60)second World: Highschool DXD (Chapter: 60—215)Third World: Demon Slayer(Chapter: 216—)Fourth World: New World (Overlord)There will be a harem, no NTR or stuff.Some of you might dislike the Yggdrisil arc as it is a bit of AU and MC talk a lot. But it is only in this arc on world travel that I will tone down his unnecessary internal monologue.I am not a professional writer, and I have no deep experience in writing, so please ignore my grammar mistakes and such. I also took some inspiration from other fan fiction.It would be a great help if you could donate your power stone to me.