Naruto and Fairy Tail Challenge
Plot: Naruto is born in Earthland to wizard saints Minato Namikaze, and Kushina Uzumaki. He is an orphan in the town of Konoha. He awakens his magic when he took over a demon, giving him an arm like Mira's when she did in canon. This causes the villagers to fear him and eventually, Naruto has enough and runs away.
Naruto masters his three souls and becomes known as the strongest takeover mage in Fiore known by the epithet: Maou (Demon King).
Naruto must have a vast knowledge on Take Over Magic, having created spells for Takeover magic. He has even wrote books on Take Over magic, that were the best books on Take Over Magic.
Naruto is born one year before Mira and erza, so he is a year older than them.
Naruto joins Fairy Tail a year before Lucy dues, so X783. He becomes close friends with Mira, Elfman, Erza, and Natsu.
This has to be the Harem, no matter what and the harem has to have: Mirajane Strauss, Lisanna Strauss, Jenny Realight, and Dimeria Yesta. Making this a Take-Over Girl Harem.
Teiku Oba (Take Over)
Satan Soru (Satan Soul): Lets Naruto take over Etherious demon kind and low-level demons.
Oni Soru (Demon Soul): Lets Naruto take over Mid-level and high-level demons.
Akuma Soru (Devil Soul): Lets Naruto take over Ultimate-level Demons, and Devils.
Spells for TakeOver that Naruto created
Teiku Oba: Kai (Take Over: Release): Lets Naruto returns a rampaging Takeover mage to normal if they can't control the soul they took over.
Teiku Oba: Fuin (Take Over: Seal): Lets Naruto seals the soul of a takeover.