Chapter 1 — Luffy attack a Giant Fish
Chapter 100 — Luffy meets Dragon
Chapter 1000 — Luffy attacks a Giant Fish Dragon
Also Luffy declared his Dream in all these three Chapters.
At the end of Chapter 100, we had 5 First Straw Hats exiting East Blue & entering New Era.
In Chapter 1000 we now have 5 Supernovas who will also define a New Era
If we combine Title of this Chapter (1000) and last one (999), we get: “The Sake i brewed to Drink with You, Straw Hat Luffy”. Oden claimed during his execution that his tale is to be accompanied by sake and told everyone that in 20 years, Kaido would be taken down. Luffy will carry his will.
Chapter 1000 will also be released in Issue 5-6 which is Luffy’s Number (Go Mu).
Also Roger is mentioned in all of Chapter 1, 100, 1000.