missoline87 actually, I feel like it's a free resource... bc I got it from this site and they claim that it's free, but idk tbh.
here's the copyright rules and I'm too lazy to read through them, but if you want to use google translate or smth (not sure if you know how to read chinese), you could probably figure something out?
though then again, you would also have to track down the copyright owner for the background as well, not just the mc, and I have no clue where I got my background from. here's the image address though if you wanna go deep diving into google link