So I have this idea for a girl oc... just wanted to see if it makes sense... if it feels realistic and not over powered or whatever...

Girl named Din that is an orphan from the Kyuubi attack, there had to be more of them.

No romantic interest, wants to prove girls can be badass Ninja as well as those without bloodlines. Is inspired by Tsunade and Mito and Tobimara

Works at a blacksmith/weapons shop undertable for extra money. The lifting and hard work helps keep her in shape and gives her more access to weapons.

No bloodlines or destiny. Average chakra levels.

Is a brilliant student and hard worker, graduates tied with Shino and under Sasuke ( he has bloodline stuff and family training helping him).

To compensate for her lack of bloodline or family jutsu she buys a tanto and scrolls on beginner movements from the place she works. She works incredibly hard and actually manages to get quite good with her sword, over the course of two years of training before canon starts. She cannot get more advanced sword style stuff until she is a genin as it is locked in the library for safety reasons.

She is placed on an older genin team that lost their teammate or a team with some worthless genin and a poor teacher so she ends up continuing to teach herself until she can go into ANBU or become a chunin. Unsure on which...

She learns Shushin and gets really good with replacement before the chunin exams, things everyone has access too...

She is a self starter and has to do everything herself but that comes at a cost at time in which there are holes in her style which are called out.

By the time chunin exams starts, she is easily chunin level and is able to best ( In theory) her entire class bar Sasuke ( he has the Sharingan) but would lose against Lee for his speed and Neji for his genius plus their experience.

Other smaller details, she is physically very strong from training and is the best in class with the replacement before she graduates. She will likely have some healing skills, but will not be a medic since every girl I see in ff or in series is a medic or a genjutsu user.

She might get good at sealing and I am seeing her being a fire user since that is supposed to be the most common chakra nature.

I can see her, if I do not make her ANBU, being trained under Raido to become a Hokage Guard...

I am do not have a lot of her future planned but this seems like a good start. If you have any suggestions or thoughts, please share and be kind.