Luffy's Connection to Nika and Ultimate Fight: One Piece Theory — Eightify
Nika, One Piece Wiki
Luffy's Devil Fruit is actually not the Gomu Gomu no Mi! - Pagina, hito hito no mi sun god nika
Luffy's New God-Fruit Power Became So Strong, The Goresei FINALLY Stops Holding Back! (One Piece) - Anime Explained
Theory: The truth behind Luffy's devil fruit!! : r/OnePiece
One Piece spoilers spark theory about Nika and power of imagination - Dexerto
How strong is the Sun God Nika form of Luffy? - Quora
Theory - D. Theories
Luffy's TRUE powers? (Theory) : r/OnePiece