This OC is by dancergirl222. I hope you like it.
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Name: Hikaru Hoshimi ("radiant starlight")

Sounds like a cute name.

Age: 25/27

Nice, a older OC

Gender: male

Nice a Male OC.

Family: Akira Hoshimi (father, alive) Akane Hoshimi (mother,alive) Kirei Hoshimi (little sister, alive)

Cool, and thank you for the life status.

Appearance part 1: pitch black hair that's a tab bit messy, amber eyes, wears hitai-ate on forehead, Egyptian blue t-shirt with a thin black long sleeved shirt that is rolled up to his elbows, black pants, black ninja sandals

A nice and simple outfit that is easy to imagine. Perfect.

Part 2: wears an Egyptian blue, long sleeved shirt with the Jounin flak jacket over it, same pants and shoes

He wears a outfit very similar to all the other jounins. Good job.

Personality: sarcastic, tends to dance around the subject when someone needs to discuss something, always thinks before doing something, but that makes him very hesitant, egotistic, not the one to dwell on his emotions, funny, know it all, protective of Kirei, pessimistic 

Well there is one thing. Tends to dance around the subject and always thinks before doing something go against each other. If he dances around a subject which is important than he wouldn't think about it. He would ignore it.

Battle: well rounded, but does best with ninjutsu

Good

Past: When the Hoshimi family moved to Konoha, Hikaru settled in quite well. He also kept his ability to form Kujaku under wraps. He didn't want anyone to think he was a freak. He just wanted to blend in. He was a bit withdrawn at first, but soon warmed up to the of moving.Hikaru did very well in the Academy, ninjutsu being his best and aced many tests. This often drove his little sister crazy, because he didn't have to study as hard as she did. He tries to help his sister, in anyway he can, but he also aggravates her a lot, given that she sees him as a sort of rival, even though he's 2 years older than her. He also develops a crush on a girl that was his friend in the Academy, Chiaki. Kirei constantly teases him about it, so he keeps everything a secret.

Good, he seems like a nice older brother and the way his sister and him have that relationship like how a real sibling would have is great. These are called sibling rivalries and are perfect for developing siblings.

Chakra element: fire( primary) earth (secondary)

Good, normal and nice to see it doesn't go over board.

Jutsus: academy jutsus, Kujaku,
falling star jutsu": the user basically creates multiple balls of white-hot flames that look sort of like stars far away, and fall on the opponent giving them terrible 3rd degree burns.
The down sides are: it's more of a long-medium distance attack, it takes a lot of chakra, and a lot of time and concentration to master.

Those are good conditions for learning the jutsu. I think it's good.

Earth release: fist-rock technique,clay clone, earth release: dropping lid,earth style: wall, exploding flame-shot, fire clone, fire dragon bullet, fire-ball jutsu

Good job, it's also good to see that you added already known jutsus to her as well.

Other: He and Kirei love to argue and aggravate each other. He likes to piss people off sometimes and reads quite a bit.

Nice, he seems like a interesting character.

Relationship: Chiaki Hashimoto

Nice.
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Final Analysis- This OC has really nothing to work on. The only think I would recommend is getting rid of one of the personality traits. It's the dance one and the thinks hard one. One of them got to go because it brings the OC out of balance and puts them in a tipped tower of a singular personality group. Other than that everything else about this OC is fine. Thanks for letting me review your OC.