There are speculations that the highly-anticipated "One Piece" film, "Gold," will feature characters from "Naruto." Both series have captured the hearts of fans in Japan as well as in other countries.

Christian Today reported that there is a possibility that "One Piece" film "Gold" may feature the "most epic crossover yet." It is rumored that Naruto will make an appearance in the movie.

Apparently, the Seventh Hokage will meet the Straw Hat Pirates at one point in "One Piece" film "Gold." It is said to involve ramen, one of Naruto's favorite food.

The publication noted that part of the promotion of "One Piece" film "Gold" in Japan is a noodle product. It will be packaged with artwork featuring the characters.

This led to speculations that Naruto will be making a cameo in the movie since he is widely known to be a big fan of ramen. Moreover, his name is also a play on the name of cured fish surimi, which his often an ingredient of ramen.

Last month, Ecumenical News reported that the famous ninja may endorse a brand of ramen in "One Piece" film "Gold." The movie is believed to focus on the massive ship owned by Guild Tesoro.

According to Anime News Network, actor Naoto Takenaka and comedian Masakazu Mimura have been confirmed to be a part of the "One Piece" film "Gold" guest cast. The former will voice the characters Double Down and White Jack while the latter will voice Saint Kamael.

Other guest cast includes Kazuhiro Yamaji as Gild Tesoro, Hikari Mitsushima as Carina, Gaku Hamada as Mr. Tanaka, Nanao as Baccarat, Kinya Kitaōji as Reizu Max, Kendo Kobayashi as Dice, Arata Furuta as Kent Beef Jr. and Pork, among others.

"One Piece" film "Gold" is slated for release on Jul. 23 in Japan. It will be shown on 743 screens, which is the largest for any Japanese film. It will also be screened in 3D, 4DX and MX4D. Eiichiro Oda is serving as the movie's executive producer.