This is the title of the chapter Jinbe is invited to join the crew.
With the reveal of “Sun God” Nika, the cheerful boy who wants to free all the worlds slaves and laughter to their lips- Joy Boy, much- this chapter has some added significance.
It starts with Shirahoshi talking with the Sea Kings, with Neptune saying the power to destroy the world has awakened.
Then we see the Sea Kings talk about Luffy’s ability to hear them, like Roger did, and more importantly, the use of Noah.
And then Jinbe gives Luffy his blood
There’s a lot of significant word choice and imagery here to unpack. Jinbe and Luffy joining forces, fishman and human, fishman and “D”. This is a representation of “the true road to the sun.” If you are on the “road to” something, then you’re on a destination to an end point. Luffy and Jinbe together are travelling to the sun. What was the sun? Well, we discover this chapter it’s this:
Note the exclamation marks. Jinbe does know what Who’s Who is talking about here. Presumably, I’d guess, from Fisher Tiger. Who’s Who, being a racist, makes the assumption that all “slimy” fishmen will know this story because they are a slave race. Not true, as we know, but Tiger was a slave fishman who could have learned this story, and used it as inspiration for his Mary Geoise raid.
Doing what Nika did, naming his pirate crew after them. Now, Jinbe did not know Tiger was a slave, but I presume that Tiger did tell him parts of this Nika tale. Sadly, Tiger could not be the one to go on the true road to the sun, as he was- understandably- too filled with hate.
A person like that can’t bring joy, the way Luffy and Jinbe can. And Luffy and Jinbe are on this road together. To go back to the first few images from Jinbe’s invitation chapter, there’s more interesting stuff. Shirahoshi, and her destructive power of Posiedon, will be involved. But there’s also a “promised time”, the Sea Kings have been ”waiting” for. They need Noah to be fixed by some people by then- I’m guessing the giants, based on the sheer size of Noah. Expect Jinbe to one day helm Noah, packed full of freed slaves and fishman, to the surface and the sun.