This is a piece of pig's dung of an anime short so let me be equally short in reviewing it. We see a lesbian lolicon alien on Earth at work catching a molester. The comedy, if you'd call it that, is about as funny as Benny Hill. the animation looks like it was made in the early 90s, the characters are utterly undefined or just preposterous in an unfunny manner, and the writers didn't even bother to explain the how and the why. Even the voice actors realised it was shit, because you can't exactly say they are giving it their all. The same goes for the half-hour OVA. I gave Ryofuko-chan a 1/10, but Yuri Seijin Naoko-san is put to shame even by that.
Do yourself a favour. Avoid this, no matter how much of a lolicon or yuri fan you might be. PLEASE.