It was rare for a school to hire a teacher just to do sexual education, but this particular campus had gone the extra mile. Why not hire someone whose entire life revolved around good sex? A succubus had no issue talking about this stuff in front of a crowd, no issue demonstrating if that's what they wanted. She made a point of punching every V-card she could to build up confidence, and there was so much less resentment floating around when the unlucky guys could just get a blowjob by asking nicely. And yet, Asta was authoritative enough to teach the guys to play nice, confident enough to not be seen as just the school cumdump, and enthusiastic enough that every with her had a good time.

Asta didn't consider her job to end at the student, though. Sure, most of the professors were straight women or married men, neither of which she would go for. She got five cocks on a slow day, why ruin it by causing drama? That said, she'd fucked a few TAs and new hires who looked like they needed their balls emptied... and then there was Rumiko.

Rumiko, despite her very female office-lady-esque exterior, had a cock. Asta had known that on sight, succubi just had an instinct for these things. However, the cautious way she went to the bathroom, the way she was so incredibly stuffy about anything sexual, and the way her co-workers talked about her... clearly, her endowment was a secret. Now, Asta wasn't about to go blabbing about this, people had a right to be private about thatever they want. But she'd noticed that Rumiko had needed to jack off during the day sometimes - rushed, guilty, unsatisfying faps when she pretended to go the bathroom, the sort that didn't really help the problem. That, Asta could do something about.

Now, she couldn't just walk up and offer like she normally would. That would get Rumiko defensive and wondering who else knew. But as Asta knocked on Rumiko's office door before letting herself in, she'd made her resolution - she was going to make Rumiko cum. Either she'd ask after enough teasing, and Asta could get to cleaning her pipes properly. Or she'd cum in her pants (quite a blast, going by how pent-up she was), and Asta would have a chance to 'take responsibility' by showing how much fun a cock could be - blowjobs and titfucks were just the start!

"Are you busy, Miss Rumiko?" Aska asked. She was wearing the school gym uniform - the T-shirt was so tight over her big tits the blow colour showed through a bit and showed them off even more thanks to the back being hitched up on her wings, and the bloomers were low on her ass to make room for her tail. A tail which carefully, quietly locked the door behind her back.