The announcement of the Universal Fighting Tournament had caught the eye of almost ever fighter on planet earth. A chance to prove one's strength not just to everyone on earth, but to everyone in the galaxy and, if they finish the preliminaries, the universe?
The Z fighters were on it immediately, Goku, Krillen, Yamcha, Tien, Gohan, and Piccolo all qualifying within twenty four hours of the announcement. There was just one problem: the matter of what Chi-chi, Bulma, Videl, Launch (who'd been dating Tien), Maron (who'd been dating Yamcha), and Android 18 would do while the guys were away, as they'd all been staying with their significant others.
"They can stay here of course," Master Roshi said when Krillen and 18, who'd been staying with him recently, brought it up, "they can all watch the fight, be among friends, and even get a little training done."
"I think it's a lovely idea." 18 said, neither her voice nor her expression letting on the way her bare foot was rubbing against Roshi's crotch under the table. Krillen nodded, oblivious to what was happening under the table, "I still don't understand why you didn't want to go fighting to 18."
18 shrugged, her foot getting faster as Roshi opened his pants, allowing her to stroke his cock with her foot, "I haven't really been up to fighting. I never really took to much enjoyment in it anyway."
Krillen shrugged, deciding not to press the issue. 18 gripped Roshi's cock with both feet pumping it hard. Roshi had gotten brilliant at hiding the pleasure he was actually feeling since he and 18 had started fucking behind Krillen's back a few months ago.
He did let out a nearly inaudible groan of disappointment when 18 pulled her feet back, seconds before Roshi would've cum.
"Oops." 18 said, 'accidentally' dropping her spoon. Going underneath the table, 18 hurriedly took Roshi's cock into her mouth and began sucking hard. It had been difficult for 18 to try deep-throating Roshi's ten and a half inches (bigger whenever he used more Ki energy) at first, but by now she was a pro, and had him to the back of her throat in seconds.
It didn't take long for 18 to finish Roshi off, taking a mouthful of cum and sitting back up in her chair, Krillen none the wiser.
She didn't swallow though, as opening her mouth to show Roshi her cum filled mouth repeatedly whenever Krillen wasn't looking turned them both on. It was several minutes before 18 actually swallowed.
Krillen went to pack up for the Tournament, 18 pulling up her shirt to flash Roshi the moment her lover turned his back. Roshi only barely managed to wipe the blood from his nose before Krillen turned back around to go out the door.
"See you, wish me luck." Krillen said, giving 18 a kiss on the cheek. "Good luck." She said, giving him a kiss in return as he left. "The girls will be over in a few hours." Krillen reminded before flying off to meet the others.
The moment he was out of sight, 18 and Roshi ran for the couch, practically tearing each other's clothes off. 18 had a vague memory of being disgusted by the though of the turtle hermit being naked, but now, seeing his massive cock and muscled form, toned over so many years of intense training, she couldn't even remember why.
They loved doing it on the couch more than anywhere else in the house. As Krillen was usually home when 18 was, the couch was an area they couldn't usually do it at without being seen, which made it twice as hot for them whenever they did get a change.
18 pushed Roshi to the couch, straddling him. Roshi buried his face in 18 gorgeous tits as she began riding him. Perk of being an android: she could be as fucked as often as she wanted, and still be as tight as she wanted. Roshi moaned into 18's chest as her pussy gripped his member, milking it as she bounced herself on it.
Another android advantage was that 18 could lower her threshold for pleasure, making her as sensitive as she chose. That, matched with Roshi's incredible size, strength and stamina led to 18 cumming three or four times before Roshi even got close.
Roshi grunted when he finally did start to approach his climax, grabbing 18's hips and moving her faster, thrusting up harder into her, more urgently. 18 managed to cum again from his efforts to cum, her tightening up as she went over the edge pushing Roshi over as well.
Roshi came with a sigh of relief, releasing a flood of hot, white seed into 18's cunt. But they were far from done; they still had a few hours. Roshi bent 18 over the couch and thrust into her other hole, something she'd never even let Krillen do.
18 moaned as loud as she wanted, not having to worry about waking or alerting her lover and being caught as Roshi pumped into her puckered ass. "D-deeper~" 18 begged, Roshi only too happy to oblige.
It was another full hour before, two climaxes on Roshi's part (18 needing to raise her pleasure threshold back up to avoid blacking out), before they stopped again; 18's ass now full to the brim with Roshi's cum.
They decided to get cleaned up by going for one more round, this time in the ocean in front of the house. They finally stopped for real after another hour in the water, 18 now unable to stand.
"Th...that was our best fuck in a..awhile," 18 panted as Roshi carried her inside bridal style, "way better than anything I've ever done with Krillen. Poor guy just doesn't have the stamina." 'Or technique, or size, or strength.' 18 added in her mind, feeling it would be mean to actually say it.
Roshi chuckled as he placed 18 down on the bed to let her rest. "No kidding. Amd it might be getting better real soon." "How?" 18 asked curiously.
"There's a whole group of sexy ladies who'll be spending the next three months here. Seven if the boys make it to the final rounds." Roshi said, "and with your help, I'll make ever last one of them mine."
18 grinned, pulling Roshi into a passionate kiss, which turned into a twenty minute make out before they finally seporated for air; already plotting their move for the other girls.