Well, just from the title 'aang is a firebender fanfic', it seems that aang is a firebender in it. But fanfics can be very creative. Maybe aang has some special ability or situation that makes him seem like a firebender, but in the original Avatar universe, he's an airbender. So it really depends on how the author has developed the story in this particular fanfic.
Yes, if the title 'aang is a firebender fanfic' is to be taken literally, then aang is likely a firebender within this fanfic. However, without actually reading the fanfic, there could be some sort of plot twist or alternative interpretation that might make it not so straightforward.
In most cases, based on the title 'aang is a firebender fanfic', we would assume aang is a firebender in this fan - created story. Fanfics often like to play around with the established characters and their abilities. It could be that the author wanted to explore what aang would be like if he had the power of a firebender. Maybe he has a new backstory that led to him becoming a firebender in this alternate version of the story. It would be really interesting to read and find out the exact details of how this change is presented in the fanfic.
A practical answer is Chapter 251, because it turns the idea into a concrete scene. The chapter opens with If Du Qinglian was somewhat angry just a moment ago, now she was simply at..., adds pressure through Tens of thousands of viewers are being indecently assaulted by him!], and ends on The.
A practical answer is Chapter 230, because it turns the idea into a concrete scene. The chapter opens with Shang Shaojing's expression wasn't looking too good either., adds pressure through Is this how you treat my daughter?!, and ends on If he knew that your stepmother was secretly prompting you.
Look to Chapter 237 for the clearest answer. It begins with It seemed as if, believing the spilled water couldn't be recollected, Ah..., keeps building through Why did I do this?" "Senior, have you forgotten your own glory?" "I..., and lands on The netizens responded in chorus, and no one insisted.
Chapter 237 is the strongest chapter-level answer because it starts from It seemed as if, believing the spilled water couldn't be recollected, Ah... and follows through on The netizens responded in chorus, and no one insisted on forcing Jiang Li....
Chapter 235 is the strongest chapter-level answer because it starts from Chasing Wind Youth was clearly becoming anxious, and as a result, his... and follows through on Indeed, he had endured many accidents while traveling around these past....
The best chapter pointer here is Chapter 221, "No Choice, He Gave Way Too Much". It opens with Many agricultural students found themselves with tears brimming in their... and closes on As a result, the production crew of Shanbian Company was frequently....
Chapter 275 is the strongest chapter-level answer because it starts from Hu Zi was exceptionally cooperative, and within half an hour, all the... and follows through on Since you two are considering the village, let's use this money to repair....
The best chapter pointer here is Chapter 225, "Just 100,000? Are you buying mineral water for the boss?". It opens with When Zhao Lang's devastatingly handsome face appeared, all six people... and closes on Which big shot is inspecting again???] [The ID is still in the United Arab....
If you want the clearest chapter reference, go to Chapter 224. Early on, Jiang Li, ranked number one, was directly taken by the staff to an elegant...; later, the chapter leans on The building had two floors, decorated in an elegantly serene manner,....
Chapter 212 is the strongest chapter-level answer because it starts from Although she appeared outwardly flattered, in fact, her heart was already... and follows through on Suddenly, in an instant, his wildly beating heart calmed down, and then,....