Four months had passed since Goku's mission on the Mugen Train. Goku's arm had finally grown back, and he came back fighting and complete missions.
One day, Goku was returning to the headquarters after a mission alongside Tanjiro.
(If I think about the fact that already four months have passed since I fought Akaza, and since my Sun Breathing is known by Muzan, I genuinely don't believe it...) thought the boy.
"Goku, you've been amazing earlier!" exclaimed Tanjiro. "You beheaded that demon with your Sun Breathing fantastically!"
"Eheh, thanks, Tanjiro-kun..." said Goku. "You know, maybe, the fact that I can now use Sun Breathing in public is an advantage for me. I mean, I don't have to hold back to hide the Sun Breathing anymore."
"You're right, Goku!" said Tanjiro. "We're both Sun Breathing user, technically, but... Yours excels mine!"
"Of course it does, mine is real and pure Sun Breathing! You just inherited it from your father," said Goku. "And the name's not even the right one! Why the hell did you call it 'Hinokami Kagura'?"
"That's the name my father gave it," explained Tanjiro.
"Oh, I see..." muttered Goku. Suddenly, Goku heard a voice.
"Let me go!" It was Aoi.
"What the hell is happening?" wondered Goku, walking towards the voice. As he arrived, he saw Tengen Uzui, the Sound Hashira, holding in both of his arms Aoi and Nao.
"Hey, Tengen! What are you doin'!?" he yelled.
Tengen turned. "Oh, Tsugikuni-kun! What a pleasure to see you!"
"Don't change the topic, let them go!" exclaimed Goku.
"I can't!" said Tengen. "I need female soldiers for a mission!"
Suddenly, Tanjiro rushed forward.
"Let them go, you monster!" he yelled, trying to headbutt Tengen. But the Sound Hashira disappeared and reappeared on the roof.
"Did you really think you could headbutt him?" asked Goku.
"Honestly, yes..." muttered Tanjiro.
"Baka..." whispered Goku. "Anyway, if you need soldiers for a mission, Nao-chan is not a member of the Demon Slayer Corps, so let her go!"
"Really?" repeated Tengen. "Then I don't need her..."
Tengen threw Nao away.
"Whoa!" exclaimed Goku, catching Nao on the fly.
"Then only Aoi-chan is coming with me!" said Tengen.
"What if I come with you?" asked Goku.
"But I need female soldiers..." explained Tengen.
"I can disguise!" exclaimed Goku. "Answer me, Tengen: If I come with you, will you let Aoi-chan go?"
"Yes, I would!" exclaimed Tengen. "Since you're way stronger than her or than anybody here, if you come with me, I'll let her go!"
"Fine! Then I'm coming with you!" exclaimed Goku.
"And so let it be!" exclaimed Goku, throwing Aoi away.
"Watch out, Aoi-chan!" exclaimed Goku, catching her on the fly.
"When do we start?" he then asked, as he placed Aoi safe on the floor.
"Now!" replied Tengen.
"Fine! Let's go!" said Goku.
"I'm coming too!" exclaimed Tanjiro, who was still there.
"Ugh... Fine, you're in as well!" said Goku.
"Us too, boss!" said a voice. Goku turned and found Inosuke and Zenitsu next to him.
"Eh? You two as well? Aren't we a bit too many?" asked Goku.
"The more, the merrier!" replied Tengen.
"Even if the only one I like among you all is Tsugikuni-kun!" he then added.
"I did not doubt that, Tengen..." muttered Goku.
"Let's go!" exclaimed Tengen, jumping down the roof. Goku reached him, alongside Tanjiro, Zenitsu, and Inosuke.
"Where are we going, old man?" asked Inosuke.
"In the flashiest place in all of Japan: The Entertainment District!" replied Tengen.
"Sounds pretty cool," said Goku. "Let's not waste any time, let's go."
"Yes, but before we start, let's make one thing clear, guys:" said Tengen. "I am a God! Tsugikuni is my assistant! And you three are trash!"
"Straightforward as usual, Tengen..." whispered Goku.
"Well, now let's go!" exclaimed Tengen, turning and starting to run.
"Hey! Wait for me!" exclaimed Goku, running after the Sound Hashira. "They're way too fast for us..." whispered Zenitsu.
__________
Entertainment District's Arrival
There was the moon, shining high in the sky, enlightening the streets of the Entertainment District. On a horse-drawn carriage, Goku was observing. He remained ecstatic: All those lights, people, and population -- he was clearly not used to it.
(These people... And the lights... Everything's beautiful...) thought the boy. Suddenly, Tanjiro, Zenitsu, and Inosuke jumped off the carriage.
"Those damn idiots!" exclaimed Tengen, pissed off. "I just asked them not to draw attention to themselves. A wall would listen to me more than them!"
"C'mon, let's search for them, Tengen..." said Goku.
"Oh, Tsugikuni-kun, thank God you exist," muttered the Sound Hashira. "Or at least, thank God you're not crazy like those three..."
Once the group reunited, Tengen walked towards an uninhabited room.
"Come inside, Tsugikuni-kun and the others," he said. Goku and the others followed him.
"So, Tengen, why are we here?" asked Goku.
"I brought you here just to explain it to you, Tsugikuni-kun," answered Tengen. "We have to find my three wives. They've been here for a while, but they stopped sending me letters. So I've been searching for them, but nothing. However, I localized the three most likely places where they might be."
In that moment, Goku's eyes widened.
"Wait a second, Tengen, wait a second..." he whispered. "YOU HAVE THREE WIVES?!?"
"Yes, I do!" replied Tengen.
"ISN'T THAT ILLEGAL?!?" asked Goku again.
"Normally, it would. But I'm an ex shinobi, and my family practices polygamy, so I can!" replied Tengen.
Then, Goku calmed down and sighed. "Fine. Now, where are these three places?"
"Makio is at the Ogimoto House, Suma is in the Tokito House, and Hinatsuru is in the Kogyoku House," explained the Sound Hashira. "You'll get there in disguise and search for them." explained the Sound Hashira.
"So... I have to act and dress like a girl?" asked Goku.
"Exactly," replied Tengen.
"What a drag..." Goku sighed.
"If you aren't finding your three wives, they're probably dead," said Inosuke. Tengen punched him in the gut.
"You deserved it," said Goku.
"I know...." replied Inosuke.
"Anyway, shall we begin or not?" asked Tengen.
"Yes, let's go," said Goku. "But tell me: Are your three wives hot?"
"They are," replied Tengen.
In that moment, Goku stood up. "Let's go."
He immediately walked outside the room.
"Wherever there are beautiful women, he dives in headfirst..." muttered Tanjiro.
Chapter 20 - End.