How Luffy's Hito Hito no Mi Model: Nika changed the power system

In the world of manga and anime, there­ exists a highly popular and enduring serie­s called One Piece­.

Was it always intended for Luffy to have a mythical zoan fruit

One Piece: A Complete List of Luffy's Gears (Explained)

The 5 strongest Devil Fruits in One Piece

My problem with the Hito Hito no Mi, Model: Nika. : r/Piratefolk

Gear 5 Luffy: Everything You Need To Know - But Why Tho?

Luffy's Gear 5: The Hito Hito No Mi Model: Nika - TFword.

Shanks e o dono original da hito hito no mi Nika - O custo do

Luffy's Gear 5th (Hito Hito no Mi Model Nika)

One Piece's 10 Strongest Devil Fruits (So Far)

How did Luffy not know his real fruit ? : r/OnePiece

One Piece Devil Fruit Series Hito Hito no Mi Mythical Zoan Model: Nika

The Meaning Behind Luffy's Devil Fruit and Explaining the Gear

One Piece: Everything We Know About Nika the Sun God

Does Luffy have the Hito Hito no Mi? - Quora