A model of Loona from Ghoulette. I don't have the link, just found this cutie on Vroid Hub tho.
The LoRA mostly train for this specific flat color style so I think it's a bit overcooked if you want other style to work with her.
https://hub.vroid.com/en/characters/3116109544866189584/models/4960872989257898886


On the V2 version of her, I don't know why but you gotta use 1.4 strength to make it closer to the desired flat color style with no lines, 0.8 strength would generate a generic Loona with flat color.