Naruto Uzumaki: 3 weeks after saving the whole multiverse from the Jack of Blades, Naruto has taken Natsu as his apprentice in order to take his mind off what happened during Journey Across Universes, and the fact that Moka said that he could have a harem like his cousin, Rito Yuuki.
Natsu Dragneel: Main protagonist of Fairy Tail, One of the members of The Twelve, and one of the few people who've fought on equal grounds and defeated Naruto in pure combat, Natsu has decided to have Naruto train him for a whole year in order to get stronger.
Lucy Heartfilia: Natsu's girlfriend, Naruto has met Lucy before(details will be explained in the future), forming a friendship with her. After hearing from Naruto that Natsu's at his place, Lucy immediately goes there to see him.
Moka Akashiya: Naruto's current lover, after the events of Journey Across Universes, she has since become one with her Inner and Outer selves. She has also approved Naruto of having a harem. Moka is off on another modeling job, leaving Naruto with Natsu and Happy.
Gray Fullbuster: Natsu's rival/friend, Gray has finally started dating Juvia. Gray, after hearing about Natsu being in danger, heads out with Erza, Gajeel, and Juvia to protect him.
Wendy Marvell: Wendy is captured first by Grosvenor, prompting Naruto and his Fairy Tail friends to go save her, Sting, and Rogue.
Juvia Lockser: Juvia sees Naruto as an older brother she never had. When she wants help with her relationship with Gray, Naruto gives her some advice, mostly revolving around telling her to appear in Gray's room, wearing lingerie and screwing his brains out, or appearing in his shower naked and helping each other(Gray and Juvia) clean themselves, which works.
Erza Scarlet: Erza, also known as Titania, is revealed to be one of Naruto's cousins, something that shocks her friends. Erza is protective of Naruto, despite Naruto not needing any help most of the time
Gajeel Redfox: Though antagonistic when they first meet, Gajeel instantly began to respect Naruto after Naruto and Gajeel had a verbal argument.
Laxus Dreyar: Laxus wants to fight Naruto after hearing about Naruto's power and his many battles, a fight Naruto doesn't want to do, since Naruto comically finds Laxus intimidating.
Happy the Cat: Naruto and Happy are a bit antagonistic at first, but that fades once Naruto brings out a platter of sushi, earning his friendship. Happy will be seen babysitting Celine whenever Naruto can't, earning a fish every hour.
Celine: Naruto's "niece" and Rito's "daughter", Celine accompanies Naruto due to Rito suggesting that he takes her with him since Naruto doesn't visit his house a lot.
Chelsea: A mysterious assassin who works for the international assassin organization Night Raid, Chelsea has her eyes set on Naruto. Why?
Kagura Mikazuchi: A member of Mermaid Heel, Kagura finds herself helping Chelsea find Naruto. Finding a little of herself in Chelsea, she agrees to help her find him, though she isn't told why. When she finds out that all the known Dragon Slayer Mages are being hunted, she and Chelsea go off to save them.
Ivan Dreyar: Former guild master of the disbanded Raven Tail, Ivan plots his revenge.
Grosvenor Tout: A legendary and wanted mage hunter wielding a multi-purpose collapsible magic gun and an array of mage hunting equipment, Grosvenor has set his sights on capturing all Dragon Slayer Mages for his employer. Killing Naruto is bonus pay.