I understand you're looking for someone to write 3 stories of 5k words revolving around a gay male shifter, and I'm more than qualified to help you. I graduated college in Creative Writing and Literature, and I've been writing fiction for over ten years. I've published online some gay romance stories (all of them fanfiction), including a few with steamy (though not entirely sex) scenes, so I'm not bothered at all by the concept.
If you'd like, you can check some of my work in this link: [login to view URL]
A piece of fanfiction I've written with a sex scene is the following, in case you'd also like to check it out: [login to view URL]
Please feel free to message me if you have any questions! I'd love to hear back from you!