Greetings everyone, first time here.

I currently try to write a plot story about how someone gaining a superpower without being chosen one/fated feeling.

Possibiliy a power that is never being used before (be the first that harness this power).

But how do you approach to this way?
Is accidental count as being chosen by god, fate or whatever?
Say, I have a character that discovery source of power by having an accident while traveling across the bridge, and they fallen and found the power.

Suicide/brave escape(or whatever it called)?
Say, I have a character that at edge of the cliff, chased by bandit or monster, so they commit a suicide or bravely jump off the cliff, thus end up finding source of power.

Also, I would like to ask a reason about, why they want power or just maybe they don't know what that is and accidentally bind/take the power.
Say, they are gravely wounded, so they want to see something beautiful before they die, so they walk into source of power?

Thank you in advance.

It's very hard to separate those two, but it's generally done through making the abnormal normal. Generally, the only way to make a character feel like they are just one of many is to, well, make them one of many.

This can be done through normalising any method of gaining powers such as:

- everyone is born with a power, each one different from the next

- rigid training over many years can master an art that gives you a unique power (ninjutsu and the sort use a variation of this method)

etc. etc. I would say the first one suits you best, from what you're describing you want him to have a unique power.

You also added in especially a power that has never been used before however, by marketing to that criteria specifically, your person cannot avoid feeling like a chosen one.

What I can suggest to you is to take a skewed approach to this. Instead of focusing on whether the world thinks you're a chosen one, focus on whether the character thinks he/she is. It's quite easy to manipulate a character's past or personality to create someone who would feel that the power was given to him by accident, or even that it is a hindrance as radio suggested. You can even go so far as to have your character being originally chosen, but choosing to forsake that path to make his own.

In essence, what you would be making is an anti-hero. It all depends on what kind of world you wish to create, do you want emphasis on the world or the character? If it's more world-oriented looking through the eyes of the character, I'd suggest the normalisation of a method. However, if you want to focus on the character and their adventures, then I'd suggest making them an anti-hero and focusing on their personal development.

You could let the character just be exceptional in other ways.

I like the ideas above. The character doesn't needs to be the only one with those powers/abilities, there could be others, some even better than him/her! But maybe the character is just very dedicated, persistent, no matter if he/she isn't as talented as other people in the world.

That way you can present the protagonist not as someone put on a pedestal by destiny or divine will, but someone who got to that pedestal by himself/herself, rising up to the challenge presented in the narrative. Not because he/she was the best, the only one who could do what had to be done, but because the character felt it was the right thing to do given the situation.

I see that angle as much more easy to relate with than "The Chosen One".

Isn't born with unique power some kind of sub-chosen one? because it's feel like gifted, maybe possessed too? (chosen by one that possess then?)

think someone born under certain circumstance, prophecy, born-hybrid or in even TES Skyrim, correct me if I'm wrong though.

Training to maximum, may allow them to create unique spell, and probably can only be use by themselves seems possible.

But I don't know if something like, someone that is not a user of that said power (or just a novice) but instead unlock it potential thus goes beyond anyone. Perhaps have a knowledge, figured out or just plain accident about how to unlock it will work? (but without feeling Chosen One/Destiny, of course)

Also, editing the OP, I think I'm talking gibberish somehow.

I appreciated everyone thought, please keep them coming .

When I feel that a character got the ability primarily because the story-writer decided to write about that character, I get the "chosen one" feeling.

These are some factors that would make me feel that way:

a) The ability is unrelated to the inclination, the problems, or wishes the character has before getting the special ability (When this happens, the main character seems like a simulation dummy to entertain a 'what-if' question.)

b) The ability is something that would save another world that the character knew nothing or wouldn't have cared otherwise. (When this happens, it seems like an excuse to include the character in that other world.)

c) The ability is related to a mission that the character would not have cared otherwise. (When this happens, similar to b, it seems like a contrived way to include the character in the mission.)

One formula commonly used to let an outsider be a rising superstar is that the outsider had always been practicing the "foundation skills" of the super ability without realizing it himself. Then, either someone spots his talent, or that he discovers his talent and enters the "competition".

Examples:

1) A chef at a martial arts school who was not allowed to learn how to fight, but started unconsciously using the moves in his cooking and had a good foundation. (When an opportunity comes, allowing him to develop his foundations, he becomes super powerful.)

2) A pizza delivery boy who is always in a rush, always almost get run over by cars and end up just a bit late, without realizing that he has extraordinary reaction time, because he is just trying to be on time for once. (In a different context, holding different tools instead of the handle bars of his delivery bicycle, he becomes a superhero.)

3) A person with a super-computer caliber mind who tries to hide it because whenever people are scared away whenever she solves problems with it. (When she becomes anonymous and realize that he can have a double-life, she start using her ability and become a superheroine.)