Earlier this week, popular manga Naruto ended its 15 year run for Japan's Weekly Jump Magazine with a final 700th episode. In the same issue, a fellow animator encrypted a message to Masashi Kishimoto, the creator of Naruto, in his own manga, One Piece. Some fan figured it out, and now, everyone knows.

Naruto creator Masashi Kishimoto and One Piece creator Eiichiro Oda have worked together for 15 years, making deadlines every single week for the venerable publication. Through the years, they have developed a close friendship and rivalry based on mutual respect, and when Naruto officially ended, Eiichiro wanted to say something to his pal, and he said it through his own manga in the same issue.

The page with the hidden message is where Luffy of One Piece goes to eat at a diner, and on the wall, are available menu items. The first Japanese characters of every item end up spelling out "Naruto Otsukaresandeshita,"  which literally acknowledges Masashi's hard work.There are also shout-outs to Naruto in the title and in the drawings themselves. Masashi returns the shout-out with a drawing of the One Piece pirate logo in his last episode of Naruto.

Now it's official.

Cover of JUMP for final Naruto

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Naruto all over

First characters of menu items = Naruto, Otsukaresandeshita