It appears there might be a misunderstanding in the premise for this Super Pillar hub.
Monkey D. Luffy is the iconic main protagonist of the manga and anime series One Piece, created by Eiichiro Oda. He is not a character in The Promised Neverland, which is a distinct manga and anime series created by Kaiu Shirai and Posuka Demizu, featuring its own unique cast of characters like Emma, Ray, and Norman.
Therefore, the question "How old is Monkey D Luffy in The Promised Neverland?" cannot be answered factually, as he does not exist within that universe.
To provide valuable and accurate information, I can offer two alternative approaches for your Super Pillar hub:
- A comprehensive guide on "How Old Is Monkey D. Luffy in One Piece?" – This would utilize the excellent context research you've provided about his age timeline and the in-universe pacing of One Piece.
- A comprehensive guide on "How Old Are the Characters in The Promised Neverland?" – This would focus on the ages of the protagonists and other key figures within that specific series.
Please let me know which direction you'd like to proceed with, or if you had a different intention behind the original prompt. I'm ready to craft a human-first, engaging Super Pillar hub once we align on the correct series context.