One Piece - I Am A Different Luffy! - Chapter 13 - 12 - Convincing Trafalgar D. Lami.

He shall call forth the bone dragon! Summon the lich and the grim reaper! Li Jiayu, the dark summoner, has been reborn and everything returned to the moment before the outbreak of the devastating apocalypse.

Spaces tremble violently and dimensional cracks connected to various worlds appear! In an instant, never-seen-before civilizations invade our homeland. Insects the size of humans and walking corpses sweep through Earth in legions. An imminent crisis is approaching humanity and billions of human lives are at risk!

In regards to Li Jiayu’s uncorrupted soul, his summons shall no longer be limited to creatures which lurk in the darkness. They will also include the entities that bask in the light.

Under the lingering shadow of death, he vows to prevent a repeat of past tragedies!

Struggling within the exhausting apocalyptic world, he chooses to trudge on the bloody path of slaughter.

Walking hand in hand with death, he no longer lives under the cold embrace of the darkness. He shall embark on the bright path towards glory.

‘This is an opportunity to make a comeback… I will put everything on the line to right the wrongs and to protect the loved ones that were once lost.’

- Description from Novelupdates

In a game-like world where dungeons, monsters, and players appear.

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.

In the novel, there are always characters who are strong, powerful, and on top of that have stunning appearances, but because of the plot arrangement and influence of the protagonist's halo, their endings are embarrassing and miserable.Jiang Jiamian’s mission is to save them.Jiang Jiamian: “It's actually very simple, just seduce and hook them up so that they no longer have time to follow the plot.”If the mission targets don't follow the plot, they can break free from the storyline and even avoid contact with the protagonist.But why do all those miserable bigshots seem to have gone crazy and turned dark all of a sudden?