Samui tries to get it on with Naruto, hoping to do it behind Hinata's back. Only to get a surprise that Hinata not only is fine with it, she encourages it.
It... shouldn't have been this easy. But Samui isn't going to look at a gifted horse in the mouth. Flirting with Naruto during the party was shockingly simple. Hinata was busy with their kids, and Naruto was casually drinking, watching over everything, giving her more than enough space to start buttering him up. Naruto seems... open about her approach even, complimenting her. She does feel a bit bad about it, but... fuck, while Hinata is very hot herself, Naruto is a fucking hunk and more than that, he seems to always be a bit lonely.
Hinata, while seemingly a very loving wife, leaves her husband alone at most public events and doesn't seem to be the jealous type. It's possible that Naruto is feeling lonely and wants some attention, which is confirmed by his flirting with her. Samui even pushes a bit forward, mentioning how she has been lonely... and she has been wanting some company... and Naruto bit her fucking bait, inviting her! Of course, she asked if Hinata wouldn't be a problem, and he guaranteed she'd not bother them.
Which led to an hour later, with her in his bedroom, face down, ass up, with Naruto's massive cock gaping her cunt nonstop. He has been pounding her for over 30 minutes, and it seems he still has more than enough stamina to go on for hours, despite having been drinking before calling her in. She just can't believe how good it feels to be stretched and fucked in such a manner. It is mind-numbing, the sort of pleasure she never thought would be possible.
"Holy shit, Samui, are you sure you're not a virgin?" Naruto even asks, whispering right in her ear, making her feel like a fucking teenager all over again. How the hell does he have this much experience, she has done a ton of seduction missions beforehand, she has experience, but near him, and near every other guy she fucked, it's like, he is actually right, she feels like a virgin and that is fantastic.
"I-I'm not, you're just... too fucking good! Where did you get this good at fucking?!" She exclaims, doing her best to hold back her shock and her pleasure. But then a weird noise gets her attention.
"Hey Naruto-kun! Got home here, Boruto-kun and Hima-chan left with my dad, it's just us three tonight!" She exclaims, as Samui does her best to shut down her mouth. What the hell, Naruto said she'd not be a proble-Wait, us three?!
"Hey Hinata-chan! No worries, just gotten started here with Samui! Didn't know that she was into me, but she is so fucking hot!" Naruto speaks, with Samui's eyes bulging out. "Did you send her my way or is this one of those impromptu stuff?" He ponders, with Hinata's voice following up from the kitchen, as it seems she might be... preparing something? Samui can't hear as the whole situation makes her cum, making her head spin. Did... Did Hinata know all this time?
It takes a few minutes for her to come by to herself, but then Naruto is still fucking her, but as she looks around, Hinata is naked, smiling, lying down in the bed near her with a cup of water and some snacks with her too. "Mhm, welcome to the land of the living Samui-chan! How's my hubby~?" Hinata asks, with Samui just confused, looking from one side to the other, while the noise of Naruto pounding her pussy still fills the room.
"Oh, she had asked how I had gotten this good at fucking!" Naruto explains casually, as he seems to be holding her with just one hand... probably using the other to chug down on a bottle of water or some Sake. She isn't sure which one, she just can't find in herself the energy to look back as the jolts of pleasure fill her mind.
"Oh, it's simple, really." Hinata continues talking casually, as if her fucking husband isn't cheating on her with Samui, right then and there. "I love having Naruto-kun fuck other girls~! He has a ton of experience, and I love to join in whenever possible. So, he has been fucking me, Sakura-chan, Ino-chan and so many other girls for years now! At this point, he has way more experience than any character in Jiraiya's old books!" Hinata giggles. It seems that Samui might've bitten more than she could chew... and that is just the start as Hinata continues.
"Alright then Naruto-kun, you've already gotten started with her, I wanna join in... time for some clones!" She exclaims. Samui might be in danger now. But if things keep feeling as good as they are now... she is more than happy to face this danger!