Out from the modern world, Allen a gray a hair boy was reincarnated as a boy in a very competitive world. In that world he came out in top and is sent to the World of Fairy Tail as a 13 year old boy. His magic power and phyiscal body decreased but his intellegence and magic knowledge has not. Allen uses 5 magic systems.

-Infinity and zero

-God magic

-Dimensional gate

-Ability magic

-Code

Infinity and zero is the strongest magic system by far.

It's the year X778, Allen is transported from the sky and smash a dark guild.

Allen [Dammn. Couldn't they not send me from the sky.]

The dark mages is startled from the crash.

Allen pick himself up and dust himself of.

Allen [Is it me or does this seems like a dark guild.]

Dark mage [What's a kid doing here?]

Allen [I fell from the sky. My name is Allen But who are you?]

Dark mage [We are the mages of the dark guild Hell killer.]

Allen [Dark guild? So you guys do illegal stuff?]

Dark mage [Yes, but you never going to tell anyone of our exist..]

Allen activate dimensional gate which summons magical weapons and shoot them with intense speed and explosions (Related to Fate series-Gate of Babylon). The system can not only summon weapons but vehicles, armor, spirits, buildings, living creatures and more. The attack kills or knock all the mages in the guild.

Allen [I guess I should loot whatever they have.]

Using dimensional gate Allen absorb all of the money and equipment in the guild including their bodies, the alive ones are tied up. Walking out of the guild he notice that the guild is in the mountain range. Allen takes out the map he looted.

Allen [Fiore?...Is this Fairy Tail. The city near here says Magnolia. It really is Fairy Tail. I have about 10 million jewels from this dark guild so I have a bit of money on my hand. Plus I can sell their equipment.]

Allen use the train system to go to Magnolia and reach the front gate of Fairy Tail.

Allen [Here's go nothing.]