>>48599It all depends on your cousin's country of origin, age, kind of visa, if she's desperate for money and Japan is her last resort or not and the model agency who manages her.
There are many foreigners who do casual model work in Japan, got scouted on the streets while on student or working holiday visas and nothing happens to them. If your cousin is more like the girls mentioned in
>>48716, yeah there's a chance she'll land in the sleazy, exploitative part of the modeling industry.