Battler will believe it if she has impossible sex with him. (Pink Trigger, Stacks -1)

"All right... how about this?" Battler cleared his throat and made his proposition with far more gravity than the current situation or the proposition itself warranted. "Let me fuck you."

"No, way." Eva responded immediately, lowering her eyebrows and flushing even more deeply. "How would that prove I'm a witch? And, anyway, you already used- Oh, huh... You actually didn't..." The witch noticed with growing consternation that he still had a stack of cash left. "But that's your last one. Are you really dumb enough to use your last one on this? You'll be walking out of here empty-handed!"

"Why am I having to pay for it? You're the one who has to prove to me you're a witch, dammit! Tch, whatever. All this stuff about being a witch aside, I can tell from my breast-handling that you're not as young as you look in your portrait... Supposedly. Anyway, if you won't show me your face, you can give me unbelievable sex that no human your age could. I'll believe you're a witch before I doubt my trademark Oppai Finger! How about it?!" The man made a cocky, shameless grin. "If you don't want to, fine. I'll leave and hire a hooker when I'm back in the mainland that's a little less expensive and a lot more accommodating."

"Grr... Gah!!" Battler's aunt, visibly burning red even in the low light, moved to the side of the door where she'd left her clothes. I watched with interest as she bent her knees and lowered her body alongside the pile, then began searching for something. Seeing her pale cheeks still wedged between that tiny thong, I would have been happy if she'd taken a while to find what she was looking for in the dark. Unfortunately, she was standing again rather quickly...

I saw that she'd gotten a string of pink, individually wrapped condoms from the dress she'd discarded. Even though I told her she didn't need to have sex... I guess she came prepared...

"All right, miserable human. Yes, you hopeless pervert, yes! We'll do it, but I'll be taking every last dollar I gave you back... You're going to use protection... And you're going to shout that I'm a witch, damn you!" She began breaking open a sealed package and expertly preparing its contents, reaching for Battler's zipper shortly after.

I couldn't tell if Battler had expected this or not. Clearly, hurtling forward into sex with a mystery woman who he suspected was ten or twenty years older than him and claiming to be a witch, even if he was using protection, was something he was now giving second thoughts. "L-look, just because you do this, I'm not obligated to say it, okay? I'll only say it if I one-hundred-percent believe it! No pity proclamations!"

"And, just to be clear... you're thinking of... any type of sex? Does it have to be vaginal? Is oral okay?"

"... Can you give me oral sex so amazing I'll have to think you're a witch?"

"I dunno, depends on how high your standard for oral sex is, oh great human!"

"I mean, it is what it is. If you aren't confident in it, don't offer it!"

"Agh, you're such a damn pain in the neck!"

In spite of their sparring, the witch had successfully managed to stretch the condom over Battler's waiting member, which was, despite his ribs and protests, quite erect. "All right, Ushiromiya Battler. Let's play a little game. You can hear my totally cute voice and high energy, right? How old do you think I am?"

"I dunno, like, forty?" Battler guessed, instantly receiving a hard slap in the face for his efforts.

"Damn, you're a snotty little punk! I am a legendary witch, with the stamina and abilities of a bombshell in her sexual prime! And... n-now... I'm going to prove it to you, Battleeer!"

With a declaration of war where a declaration of love might have fit, Eva leapt onto the loveseat, nearly shoving her bare ass in Battler's face... She entered a squatting stance, lining up her hole with her nephew's waiting cock... She brushed it a few times, which seemed more like a ritual to prepare him than herself... Then, she lowered herself with determination. In the low light, I saw her face first grimace, then break open in a gasp as she brought herself lower to accept more of it inside of her... She kept going until it disappeared beneath her.

"F... fuck..." Battler gasped, reaching his hands forward to place his hands on the hips of the mystery woman in front of him.

"Now... Give up and diiiiiie!!" Eva screamed in her put-on obnoxious brat voice. Her pupils had dilated and her mouth hung open sloppily as she bounced on him... No, bounced is the wrong word for it. It was less like the rise and fall of a hammer, more like the motion of a jackhammer. Finally, I understood Eva's true depravity and drive as I watched her thrust herself up and down in a way that looked exhausting for a woman half her age, her breasts rocking madly with the reckless sex.

In spite of this, mercilessly, Battler was holding on. Even with his blindfold on, I could tell Battler was dazed by the furious motion as his hands gripped her soft handles for dear life. "Holy shiiit! I'm gonna-a-!"

"No... you're... not...! Not... un... less... you... say... my... name!!"

"Aaaaaaaagh! Uoooooo!! B-Beatriiiiiiiice!!!"

"Battleeeer!!" Beatrice let out a cry as well as her frantic exercise finally came to a stop. It occurred to me that we were very lucky the family conference was probably running late now, on the other side of the mansion... Otherwise, someone would definitely hear that act of indiscretion. Her neck arched back as her hips bucked against Battler's in a few rough jerks. For a tense moment, as she slid up and off his cock, there was the question of what the aftermath would look like... However, the condom emerged ballooned, but successful. The witch's legs shook dangerously, her knees probably screaming from the action.

"Ah, it's useless... it's... all... useless..." Battler panted and rested his head against the rest of the loveseat behind him, reaching a hand up to his blindfold. "Now... I get it... I'm **** to admit..."