[Otaku]

Another angle to consider is what constitutes "sex" and who is being affected. Whether going for comedy, horror or even just straight-up storytelling, you can change things dramatically based on this... and justify a larger or smaller "discount" for traits using it as a Limitation. Let's stick with Stormcrow's example. Someone could have Mind Control that only activates by engaging with coitus and automatically targets the other person involved in the act. Furthermore, the target must be a willing participant.

Or maybe it just requires achieving an orgasm and can target anyone who would normally be in range. Talk about a power suited to a creepy stalker... or perhaps a sleeping teenager. Keep... um... tweaking things and you can get quite a dark power, where someone does need to engage in sexual acts, and whomever else is involved is the automatic target, but no consent is needed. In which case, various methods of rape (whether through deceit or overpowering the victim) become an even greater violation.