My first guess for where she's from is that she's the commissioner's OC, but I'm not a hundred percent sure > copyright request
Digging deeper into Pixiv and it looks like the first artist to draw Felicia Castro is Saiki Swankyo. The art here states that she's an OC. I dunno how much this counts? Pretty new to this to be honest.
Digging deeper into Pixiv and it looks like the first artist to draw Felicia Castro is Saiki Swankyo. The art here states that she's an OC. I dunno how much this counts? Pretty new to this to be honest.