@ Serai:

This spoof is written by mara (http://marashapeshfter.livejournal.com/):  

Saving the world didn't mean an escape from school. By order of the new director, the HiMEs were to be given extra lessons to make up for all the classes they'd missed. With much moaning and groaning and shuffling of feet, they suffered through History, English, Mathematics, and... wait. Sex ed??

"I don't see why we need this class." Natsuki grumbled, sinking low into her seat.

"What's this Kuga? Already know all about it from your girlfriend don't you?" Nao teased.

Natsuki blushed and was about to come up with an angry retort when Shizuru suddenly appeared and hugged Natsuki from behind. "Ara, ara Yuuki-san. You shouldn't tease my Natsuki like that."

Anything else that Shizuru was about to say was lost when Midori entered and enthusiastically called everyone's attention. "Hi everyone! Since the school's usual lecturer is unavailable for the day, we invited a special guest. I'm sure some of you will already be very familiar with her." Midori sad with a grin. "Please welcome Fujino-san, your new teacher."

A woman in a purple kimono entered, looking like an older version of Shizuru. Her appearance, how she carried herself, and right down to Shizuru's smile.

"M-mother?" Shizuru asked, blushing to an extent that most people in the room had never seen before. Natsuki, on the other hand, had already made a run for the door.

Shizuru's mother smiled and wrote her name to one side of the blackboard. "I was in the area to visit you and your girlfriend." Shizuru's mother talked as she wrote. "Since I was here anyway, Fumi-san requested that I teach a couple of lessons here. She was most concerned seeing as certain students are remarkably ill-informed about seizures and the like. So I'm here today to discuss..." Shizuru's mother stepped back to reveal what she'd written in huge letters spanning almost the entire blackboard and read it out loud with a completely straight face. "How to Have Hot Lesbian Sex."