Ash had been traveling with Dawn for awhile. To avoid the frustrations of going for days or weeks without any fun with Brock while they waited for a moment or two of privacy, Ash instead told Dawn outright that he was a cunt boy and that he and Brock, though not in a relationship, would be hooking on on occasion.
Dawn took it surprisingly well. And was even kind of curious about it. She didn't have a problem with setting up her tent away from Ash and Brock's so that they could have a little private time, but she also never mentioned that she would almost always sneak back over to peek at them. She couldn't help it, she wanted to know what sex with a C-boy was like.
Well, that was the motivation behind her first time spying on them, every time after that was just her wanting something sexy to watch. They would all continue their journey like normal during the day, then at night Dawn would creep out of her tent in her night clothes, move stealthily back to where Brock and Ash had set up their camp, and just enjoy watching them go wild for a few hours at a time.
The first five or so times really had just been out of her own naturally curiosity and fascination, then around the sixth or seventh time watching the two fuck like pokemon in heat, a similar heat started to rise in Dawn herself, and with herself hidden from view, and the sights and sounds of Ash getting his cunt fucked by the Pewter city gym leader so close by, she couldn't help touching herself to it.
The first time she'd tried to ignore it at first, not wanting to be any more of a perv then she already was for watching them to begin with. Then inevitably, she gave in and reached down between her legs, rubbing her slit through her panties gently while she watched. The first time wasn't the best, as Dawn was so worried about being heard or seen that she fled back to her tent before she finished the job and came in privacy. The second time however she got into a more comfortable position on her stomach to watch, her arms underneath her so she could rub herself and a portion of her night gown bunched up and stuffed in her mouth to keep her quiet.
This process worked perfectly, and she continued to do this each time until she decided to experiment. Once she laid in a way where she couldn't see them, but could clearly hear Ash and Brock moaning. She closed her eyes and used the sounds to form a picture in her head to finger herself to. She tried many different positions, each getting a little riskier than the last. During one session Dawn realized that her bare leg had begun hanging over the log she was hiding behind. She started to move it back so she wouldn't be seen..then didn't.
It wasn't so much that Dawn wanted Ash and Brock to know that she'd been watching them, but the fact that they might know, the fact that she could be seen, excited her terribly and helped her cum harder than most all of the times she'd done it before. She didn't quite understand why, but she couldn't argue with the intensity of the climax.
So she kept at it, letting herself get more and more visible as she watched. This reached a boiling point one night with her, fully naked and in full view of both Ash and Brock as she fingered herself, not bothering to stifle her moaning as she watched the two go at it. It was the most intense orgasm she'd had yet...and it also alerted Brock and Ash.
Dawn was just barely managed to get back behind cover before she was seen.
"What was that?" Ash wondered aloud. "It almost sounded like..Dawn." Brock said, Dawn tensing up. Ash laughed, "Yeah, like she'd want to be anywhere near us when we're like this. She always sets up her tent like a mile away."
"True," Brock said, "But who knows. May turned out to be into it. Maybe we should ask Dawn to join us sometime."
Dawn perked up at this. 'Yes, ask me tomorrow night. Ask me!' She thought excitedly. "I don't know," Ash said, "Dawn is really nice. I'd hate to ruin our friendship by asking her to join in and scaring her off." "Yeah, you're probably right." Brock said.
'NO!' Dawn screamed in her head, 'Ask me! ASK ME!'
"Still, it couldn't hurt to act least ask. We'll back off if she isn't interested." Brock said. "Well...okay. We'll ask." Ash agreed.
'Yes!' Dawn cheered in her mind, thinking of all the amazing things she'd do with them tomorrow night. "Hey Dawn, care to join us?" Ash called, facing Dawn's hiding spot.
Dawn's blood froze in her veins. "If not, that's fine; you can still keep just watching if you want." Brock called to her.
Slowly, Dawn stood up from her hiding spot. "H-how did you-" "Oh we've known since day one." Ash chuckled, "You think you're the only one who gets off on being seen?"
Dawn blushed hard at this, opening her mouth to apologize. "Well?" Ash interrupted her with a smirk, "Do you still wanna join us? If not, we don't mind. You're a great audience~"
Ash and Brock went back at it, Brock turning Ash as he rode him so that Dawn had a perfect view of his pussy getting fucked. Dawn sat watching, drooling, and touching herself, for several minutes before she finally worked up the courage to stand and walk over to them, ready to test out everything she'd had planned for tomorrow night.