Here's a translation of what the guys are saying in Japanese to one another. Pretty funny banter.
The protagonist is Noc. He leaves his land behind to travel alongside his three best friends.
Noctis: "Well, yeah... I've gone traveling.
Prompto: "Hey! You are not going alone! What kind of travel?
Noctis: "Like bounty hunting."
Prompto: "Something like that. Four colleagues/friends that give hell to everything that stand before them.
Gladio: "And make due as they can..."
Ignis: "Having the deposit (Gas?) and stomach full, it costs some Gil."
Prompto: "Yes! Noct's old man left us his amazing car, but maintaining it is very expensive...".
Noctis: "And it uses up a lot of gas..."
Prompto: "So, what made you want to travel the world?"
Noctis: "As if you didn't know. It was not my idea."
Gladio: "You could be more specific!"
Prompto: "Someday you will go back home, right?"
Noctis: "Of course. I'm the Prince".
RECLAIM YOUR KINGDOM!
*The Kingdom of Lucis has fallen.
*Before the invasion, the King sends the traveling group away .
*Noctis and company go after the invaders.
Noctis: "Well, this is..."
Prompto: "Ignis! He likes glasses and cooking! He has the IQ of Sherlock Holmes!".
Gladio: "You expect someone to get that example?"
Prompto: "Noct! You say something, too!"
Ignis: "You could speak of my culinary talents".
Noctis: "Yesterday's Garula Stew was amazing. It was delicious, but the peas were excessive."
Prompto: "Next up, Gladio comes from a great family, but he's a beast. You can tell by his looks."
Ignis: "And by the way he acts."
Prompto: "If brute force is necessary, there he is, and he likes it."
Noctis: "The field, the drinks, the instant noodles..."
Prompto: "The girls... And Coleman!"
Gladio: "Aren't you supposed to sell me well?"
Noctis: "I'm next".
Gladio: "Noct. He likes fishing. C'mon, show off your latest catch"
Noctis: "A 50cm perch."
Prompto: "Ohh..."
Noctis: "Show a little more emotion!"
Prompto: "I don't know if I should be applauding or what..."
Noctis: "Only this one is left."
Prompto: "Prompto Argentum. I love photography and spicy food."
Noctis: "And girls".
Ignis: "I suggest you stop following them around with your camera, That's a crime, man."
Prompto: "Hey stop! Don't go in there! You are humiliating me! I want to make it clear, I'm not a stalker!"
Noctis: "Okay, let's go..."
*Montage starts*
Universal stories and feelings at the hand of the latest technology. The team of Final Fantasy XV.