"Why'd you stop?" Kurama questioned when Naruto returned to his room.
"I'm not going to fuck my mother, furball," Naruto snorted and dropped to his bed naked.
He sighed and looked at the ceiling. "I had enough fun for one night."
Three loads of fun in fact.
Taking a shower with his mother and rubbing his cock against her bubbly butts was just a bonus.
He could have penetrated her when his energetic meat rod nested nicely between her shapely asses, but he had recollected himself enough to know that it would be wrong.
His mother hadn't yet, and she made no attempt to stop him.
"Why does it matter?" Kurama questioned.
"What do you mean why? We're –
"Blood related?" Kurama questioned. "So? As long as you don't impregnate your mum, it's a pleasurable pastime. You're helping each other out. You feel better. She feels better. Everyone wins!"
Strangely enough, Naruto found that to be agreeable.
"And I'm pretty sure most clans inbreed for centuries to keep their Kekkei Genkai from getting out," the fox added. It was a well-known fact, and it also kept the clan retained their physique traits; their identity of sort. Uchiha – for example – generally had black hair and black eyes.
"Plus," Kurama continued. "Every one of you came from the first chakra manipulator, whoever he or she is. If you want to be technical, you're all related in one form or another! Why let something like paternal connection stops you from having fun?"
"The first huh," Naruto muttered.
Chakra – it was stated to exist in everything and everyone, but that wasn't true when he entered higher state of Senjutsu.
Not everything around him had chakra in them and not everyone could manipulate it since they had no pathways within their body, meaning the knowledge was bestowed upon the world.
If that was the case, there was the first person who able to manipulate chakra.
"I wonder who she is," Naruto yawned.
"Eh? How you know that person is a she?" Kurama asked.
"Just a guess," Naruto dodged the question and dozed off happily. He only had a couple of hours left until daylight, and he had a full day ahead of him.