The Primordials Demons Rimurus (Hiatus)

Sequel of Rimuru and Ultima Goes to One Piece

Rimuru and Ultima decides to reincarnate for Ultima again because in the first timeline she was Rimuru and Rimuru for the first time. But what happens when other Rimurus from other timelines decides to reincarnate in the same timeline of our duo.
This story has collab with: @Herobrine260912 in his story: Legends hidden away