It's still too early to tell. Knowing their other works, author could very well use "mind-break" on Caius which could only be cured if the MC travles through the Four Nations, go through the Grand Line and reach Konoha, where inside is the gate to Seireitei in which he must meet Majin Buu who would devour him and forcefully reincarnates him in a world of Heroes wherein he must attend Tokyo Jujutsu High and finally defeat Sgt. Keroro and his army of Inhuman beings; Nazarick.

Well...at least it's moving faster than the egg plot that didn't know when to leave the party. -_-