Similarly to "Tsumari Suki tte iitai n Dakedo", I've watched this drama because of the FL, despite the fact that it's not really my genre, normally...and surprisingly ended up liking it quite a lot!
True, the premise is as weird as they come, let's face it; but they managed to develop it in a quirky-but-funny way (LOL, those *literally* steamy scenes! ^__^;;;...), and apart from that, the story itself is a lot more wholesome than one would expect at first (heck, it's a lot more wholesome than 90% of other romance dramas, as far as I'm concerned! >__<).
Two nice characters that it's impossible not to root for, in a sweet, healthy relationship (yep, they share a...ehm...unusual fetish which I honestly would've done better without...but hey, they're consenting adults and nobody gets hurt in the process, so, like, why not...?) that advances through mutual selflessness, love, respect and honest communication.
The leads both delivered very convincing performances (besides, Ohara Yuno here is the very definition of a perfect GF! - and I suppose Sato Kanta will have the same effect on the female audience), the music is nice too, and so is the production value.
It gets a lot better after a few episodes, so my suggestion is, if you feel like giving it a try, don't stop at the first episode(s) but watch a few more! ^___-