Natsu Has A Brother?!

(This is the first book I shall ever write. Please, do read it remembering that. I would absolutely love feedback. If you have not read Natsu Dragneel's Sister...Tsubaki Dragneel? Yet I highly suggest it, as it also ties into this story. Until I am able to figure out how to change the rating I will leave a warning here there may be a curse word here and there and some suggestive scenes and use of alcohol. Enjoy!)
Description: In the small town of Magnolia, there is a guild. A guild that held powerful wizards. Let's just say that they are pretty easily noticed and admired. And in this guild they have their very own pink haired Fire Dragon Slayer. His name is Natsu Dragneel. He can be a real hot-head, and easily angered. But he's also kind, and driven. Overall he's a good person. Everyone thought they knew his past...but he hadn't told a soul anywhere about...his little brother; Buranku Dragneel. While his big brother Natsu had trained all day, he had shyly watched from behind the trees, practically blending into the background. He fell asleep during one day while watching his brother practice Fire Dragon's Roar. He awoke to find that he was still behind the trees. He stood up to watch his brother practice again, to find he was no longer there...and his big sister Tsubaki wasn't there either...he panicked and began running through the forest calling out for them. There was no answer...he was forgotten by his siblings...will he be able to find his siblings again and maybe even have them remember who he is?