The presence of whatever it was - hadn't she found something like this in the shower? - was vaguely worrying, as was the ninja's gasp in reaction to her touching it, or at least the area around it, but when Sheena responded with even more passion, Yukari had to assume she hadn't actually noticed. Smiling, the youkai replied in kind even as her hand continued to explore this new oddity.

Smooth, round, like glass or something crystalline. It was set in some kind of metal ring, not entirely regular but not particularly ornate, which was in turn set in or against the ninja's skin. Some kind of orb implanted into the ninja? Yukari made a note to ask later, in the most embarrassing way possible should the opportunity present itself, even as her fingers traced along the outside of the ring against the girl's bare skin, hoping for another reaction like before.