I haven't add her to TH yet since I plan on revamping her whole design. backstory or even name (something like Mato Hoshii probably for more accuracy to the language :')) but she's a fancharacter of a reaaaaaaaaally obsecure kids anime called Crash B-Daman. It's basically the only modern B-Daman series (you can consider it as another cousin of Beyblade, but with a Bomberman-shaped marble shooter kind of toy) that was never localized outside Asia so there's literally a really small amount of contents regarding this fandom (and I'm 99.9% sure I'm the only one who's a fan of this series here lol)
Here's her design from 2014. I kind of want to redesign it to make it less "plain" but yeah-
I'm bad with interfering or tampering with existing canon content so I kind of consider her as an additional character for a (non-existent) sequel of the series? Probably 2-3 years after the main setting, which also gives me more work since I would have to write an entire fanmade sequel to the series but hey, more contents for a long discontinued series to feed to myself is a good thing :'D
(Again I'm reworking on her entire character but her previous one was she's a sheltered girl who never stepped outside her home because of past illness but after recovered, she only got inspired to explore the outside world after receiving her B-Daman that her late grandfather previously owned.)