Just a note: You could still write it even if you don't know much about the Inuyasha world. That's what AU is for
(a modern setting would likely fit fine with the idea) I think you should give it a try yourself as well, I mean it can't do any harm. For a challenge you'd probably get more variety if you were less specific (as in not restricting Kagome to not taking advantage of her gift, she might do so and feel guilty about it etc. You could even make it really broad by just saying that the challenge is Kagome can hear the thoughts of men near her. Sess/Kag of course, and leave the rest up to whoever participates to decide
).
Just my thoughts on it. I'd love to read it if you decide to try it yourself ^^