How could you have watched fairy tail before he was born, Just implying that fairy tail has been around that long is stupid enough to earn you a facewall award.
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Also fairy tail was released in 2006 but very rarely translated during that time, So i dare say your Bsing, Also allow me to explain why makarov is noting your huge lack of creativity and character knowledge in general.
Natsu "Salamander" Dragneel (ナツ・ドラグニル Natsu Doraguniru?) is the main male protagonist of Fairy Tail. He is raised from infancy by a dragon named Igneel, who disappears seven years before the series' present.
Your character is raised by people, He is not an orphan he is a nara who all have long black hair and long gaunt faces and are quite tall, Natsu is the complete opposite being short and stocky with bright red hair.
Natsu joins Fairy Tail and partners with Happy during his quest to search for Igneel. He is known as a Dragon Slayer (滅竜魔導士(ドラゴンスレイヤー) Doragon Sureiyā), a wizard who can perform an ancient form of magic, or "Lost Magic", that grants him the physical properties of a dragon. Using Fire Dragon Slayer magic (火の滅竜魔法 Ka no Metsuryū mahō), Natsu is able to breath fire, emit flames from any part of his body to attack his opponent, become physically immune to fire, and ingest any flame for nourishment. When he consumes magical substances containing a large amount of magical energy, such as residual energy from the Magic Council's Etherion attack, Natsu is able to achieve a more powerful form of Dragon Slayer magic called Dragon Force (ドラゴンフォース Doragon Fōsu),[ch. 160] which turns his skin around his eyes and on his forearms scaly, and increases both his physical and magical power. With Dragon Force, Natsu can temporarily eat other forms of magic and combine that with his own however, Natsu becomes sick for several days after his transformation wears off.
Your character can do nothing in comparison, In fact like Makarov says your bio is the opposite in fact natsu being a strategic shadow user is an insult to the character natsu in general, Being a nara is completely not his style nor his skill build at least pervy used his with MS and tried to make customs and custom MS techniques that emulated Natsu.
Natsu is generally carefree and reckless in nature, and causes most of the collateral damage Fairy Tail is blamed for. However, he is extremely loyal to his guildmates and attacks anyone who tries to harm or insult them. Although he comes across as thick-headed to several other characters, he is a perceptive tactician in battle and can quickly deduce his opponents' strengths and weaknesses. He suffers from motion sickness when riding on vehicles of any sort, as well as when carried by others. The exception to this rule is Happy, who Natsu says is his friend and not a "moving object". He is prone to challenging his guild's S-Class wizards to petty fights to test his strength, in which he is often defeated with little effort from his opponents. When properly motivated to fight, he is recognized as one of the most powerful wizards in the guild.
Well where can i begin here, From a nara standpoint they are a complete mismatch, Nara's are intelligent fighters who loathe close range encounters preffering to stay at a distance and defeat there opponent using shadows, Then we move on to you as a person using this bio, Natsu is thickheaded but has bags of power to back it up and like it says he is loyal im sorry but i dont think you meet the criteria for this bio either if im honest and i think you do the character no justice and like makarov said a true fairy tail fan would know this wasnt acceptable as a natsu bio.