I've only ever encountered the explicit sort, which pretty much soured the whole genre to me. (I was neutral to it back in the day.)
And when I say soured it, I mean it burned down the fields with a nuclear bomb, poisoned the groundwater with mercury, cyanide, and all that good stuff, and then salted the earth just to be sure.
Ninja Edit: Agreeing with Ammy here, there could definitely stand to be less yuri.
Like I always say, if you can't do something right, then don't do it at all. Take a few years practicing before you jump into something.