This is a pretty flexibel Ryza model but in flexibel I only meant the outfit choice and even if it is kind of flexibel it still tries to create certain things from her base outfit for example the hat or the side cutout in her shorts but apart from that its pretty tame and go do a variety of outfits that are not her game outfits.
Oh and one more thing I would highly recommend you use "small breasts" as a tag I know it sounds like blasphemy but the default chest size for that model is kind of big or at least for me it is a bit too much.
I originally trained it to go with my Makoto model and that works just fine, also works well with other Outfit lora/lycoris I also tried to use some of the Djeeta classes and most of them also work as outfits but you have to tweak your prompts a bit and shift the weights around.
I chose to use her inital as keywords to not conflict with anything you want to do because I think the AI has a rough idea how Ryza looks so the keyword is just RS.