I believe that for the readers who have made it this far, these few extra cents won't matter.
Writing up to this point leaves me rather emotional. Although this book cut some side plots, it truly was properly finished.
Regarding Mary Geoise and Imu's side, because the original work has not reached that plotline yet, everything is completely unknown.
And because the author lacks imagination, I had no way to conceive what Imu should be like.
For example, the demons represented by the Five Elders are basically all yokai from Japanese mythology. I am not very familiar with that.
So you can probably see that I barely expanded on the Five Elders' demonic abilities. Everything was either taken directly from the plot, or resolved with clean instant-kill battles.
My imagination ran out.
At the very end, I used the most violent method to finish off Imu, the final boss, as well as Mary Geoise.
Consider it the author's explanation for myself and all the readers.
I will not write any side stories about what happens after Ren finishes fighting. Those things are troublesome, and one careless mistake could get the book banned.
What can be confirmed is that he will use the Revolutionary Army and other forces to push the One Piece world's continued development.
They will move from slavery to the level of modern society, and at the same time, rely on Vegapunk's infinite energy to complete the structure of a communist society.
Ren will act as insurance, becoming the blazing sun that never sets, watching over the world's operation.
During that time, naturally, there will be shameless harem life as well.
After some time, Nami will go complete her dream and travel everywhere drawing sea charts.
Vivi will return to Alabasta, become the next queen, and lead Alabasta into a new era according to Ren's arrangements.
Robin will study the Poneglyphs and reveal that history. Afterward, she will become the core secretary of Ren's group and help Ren realize his ideals.
Nojiko will travel the seas, then return after some time and remain by Ren's side.
Hancock will move to Totto Land and settle there, establishing a new Kuja there.
Violet and Baccarat will complete their plans of integration. Violet will bring a child back to Dressrosa, and like Vivi, promote the kingdom's development.
Baccarat will continue trying to awaken the Luck-Luck Fruit. After awakening it, she will go find Lord Lantern and obtain the Pure Gold that can grant immortality.
Yamato will, under Hiyori's guidance, become the medium through which Ren controls Wano. The hypnosis series will continue.
By the time Momonosuke comes out, Wano will already have become the Palace of the Sun, the palace where the blazing sun resides.
There will be no possibility of him causing any waves.
As for Monet and the like, those who understand, understand. They are all reduced to sex slaves.
Among those not in the harem:
Zoro will have a great battle with Mihawk. From being unable to determine a winner to eventually establishing who is higher, they will finally become sword friends.
Kuzan will form the new Marines, bringing along people such as Fujitora, Smoker, and others.
Urouge and Cavendish will continue adventuring. They want to see the great treasure of the Pirate King.
Luffy will also set sail again at this stage. They have already finished their training, and next, they will have to face the Angel Legion, whose members are all at the hundred-million bounty level on average and exist in enormous numbers.
Because of Dragon, he will still be able to find the great treasure.
As for what the treasure actually is, please read Oda's original work.