Time Travel Demon? Well, that's disappointing.

Untitled Part 1

"Nezuko-chaaaan," Zenitsu whined as Nezuko hugged her brother goodbye.

They had thought all of the demons had died with Muzan, but the disturbance could only be described as demonic. Still, with how evolved some of the demons got, it wasn't out of the realm of possibility that a demon survived. And so, Inosuke, Zenitsu, and Tanjiro were sent to go and see what was up. Tanjiro was there mostly for moral support, as his injuries made it so he still couldn't fully use his hand. Well, moral support and keeping the other two on track.

"No hug for me?" Zenitsu continued.

Nezuko just giggled and patted him on the head like a child. Her hypnosis was still in effect to some extent and she viewed Inosuke and Zenitsu as her little brothers. Much to Inosuke's confusion and Zenitsu's dissapointment.

"Stay safe!" she said in parting, and left to help out the others at the butterfly estate.

So they started their way to the disturbance. It wasn't long before an argument started though.

"Tanjiro! Why is your sister so rude?" Zenitsu accused.

"Who are you to call my sister rude?!" Tanjiro burst.

"Yeah! Even though my underling is weaker than before, she isn't rude!" Inosuke also yelled.

Zenitsu cowered. "It's not my fault, I keep asking her to marry me, and she keeps not responding."

"She's too young to get married!" Tanjiro continued, "So are you!"

"I'm nearly 17, long overdue for getting married."

"17?" Tanjiro asked, had so many years passed already?

"Besides how can you scold me when you're flirting with Kanao?"

Tanjiro looked confused and then turned red. "It's not like that, we just--"

"Not like that? Am I supposed to believe that? Huuhhh?"

Inosuke, who'd been uncharacteristically quiet, spoke up for the first time.

"What's the deal even with marriage?"

The arguing pair didn't think much of their boar headed friend's question, it was almost expected that Inosuke didn't know the finer aspects of human culture. However, both young men were almost offended by their friend's seeming disillusionment with marriage.

"It's really nice Inosuke!" Zenitsu insisted, "A wife will make you food and keep you warm at night, and--"

"And be your companion throughout life!" Tanjiro said, "You'll raise your children together."

"So that's why he wants to get married," Zenitsu said slyly.

Tanjiro didn't catch the double meaning, and continued with, "I always wanted a big family like I grew up in. So I guess getting married younger would make sense..."

Even with the pig mask covering his face, the blank look could still be felt. None of this was sinking in.

"Inosuke, were you just asking what marriage is?" Tanjiro asked.

Inosuke tilted his head, "Zebutio always is talking about it, so I thought it was that."

"That?" Tanjiro asked.

"You know, that. You were talking about it too, how babies are made. So you want to do that a lot with Kanao!" Inosuke said loudly.

Tanjiro finally caught on and turned red. "Marriage is more than just that! It's forever! You choose one person to share your life with."