I don't know this character, but she's not from Kancolle
Can someone identify if she's from the Chinese warship girls?
It was tagged 艦娘 - warship girl - on pixiv, which is linked to Kantai Collection here. Even though there are a lot of copy cats and original characters that are ship girls and not part of Kancolle universe.
I had no idea what she could have been from, so just left the translated tags.