Izuku: Tanjiro, I fetch her for you, the Mother Spider or Hana...

Hana: Hello, Tanjiro...

Tanjiro: Huh? By why is she a kid?

Izuku: She was made as a Mother by Rui, But let me help you.

Flashback

Izuku Y.: Izuku, I unlocked the last seal, you will have control over time and space. You can alter the age of anyone and Warp.

Izuku: and the consequences?

Izuku Y.: Nothing... I erased it, permanently...

Izuku: You're making me too OP!

Izuku Y.: That's the point.

End

As it shows.

Tanjiro: Since when can you do that?!

Izuku: Since, My other self decided to wake me up late at night...

Shinobu*crying*: Nee-san...

Kanae*crying*: Shinobu, Kanao...

Kanao*crying*: Master...

Kanae*crying*: I miss you both...

Both*crying* We miss you too...

Izuku: Wow... Awesome, So in the newspaper some idiot jump of a building and prayed that he can fly? What an idiot, HAHAHAHAHAHA!

Shinobu who heard it, and was fuming with rage, for her boyfriend to ruin their reunion that he made.

Shinobu*dark aura*: Darling~ shut up!

Izuku*scared*: H-hai!

Kanae: Ara~ Ara~ who might you be?

Izuku: Wow, you are Shinobu's sister... But your better than her in saying ara ara...

*Smack*

*Smack*

*Smack*

Shinobu: Shut up, Harem King!

Izuku: Hah! I accepted that name a long time ago!

Shinobu: Child Rapist!

Izuku: Not if she liked it.

Shinobu: Ah... Ahh. Ah! You always have a counter ready for me!

Izuku: Yep, and I'll get you all pregnant tonight~, Right? Honey~

Shinobu blushed beet red, she was both embarrassed and aroused, she wants to jump on him but there was to many people present, so she has to control herself.

Kanae: Can I join?

A wild Tanjiro appeared.

Tanjiro: Hai, You are very welcome to join, Hi my name is Tanjiro Kamado, the official manager of his Harem.

Izuku:' Why does he sounds like a professional recruiter...'

Kanae: Ara~ Izuku~ make me happy~

Izuku: Hai~

Izuku is currently laying on the bed when the door opened and revealed his harem, Except for Nezuko, who is currently sleeping on the other room.

Izuku: Um... Hey... Are we really doing it tonight?

Kanae: Yes, We talked about it and Nezuko said, that we'll need stamina~ Ara~ Darling, So your a beast in bed~

Izuku: Are you all sure? Not that I don't want you to be pregnant but, still...

Shinobu: We're sure.

Kanao: I'm ready!

Mitsuri and Aoi: Us too!

Izuku: Okay then...

Izuku walked over to Kanao and kissed her it lasted for a few minutes, he did the same with the others, He moved Shinobu towards the bed, she got all fours and the night went on...

Izuku woke up and he saw the mess they made, they ended up all night but, since he promised Nezuko that he will help her, he woke up early, he saw his harem covered in his cum, he decided to wake them up.

Izuku: Girls, wake up, we got a long day, today.

Shinobu: Later, Darling...

Kanae: You made our legs numb...

Izuku: Sorry about that, but I can't leave you girls like this, tell you what wake up and we can shower together.

All four: Really?!

Izuku: Yes, so hurry up.

All: Okay!

After a shower full of kiss and tongue action, Izuku and the girls walked into the Living Room of the Mansion. Tanjiro with Hana's head on his shoulder, Eri and Kota playing with Kiyo, Naho, and Sumi, and Nezuko watching them play with a smile. Izuku went to her and gave her a kiss.

Izuku: How are you Nezuko?

Nezuko: I'm fine, Just hungry...

Izuku: What do you like to eat?

Nezuko: You know I can't eat anything right?

Izuku: But the bab-

Eagle: Izuku! Izuku! A message from Lady Tamayo!

Tanjiro: Oh, you know her?

Izuku: Yeah, we met her once, we helped her find the ingredients she needs for the cure.

Tanjiro: Of turning Demons to humans?

Izuku: Yeah... ... ... Oh! Yes!

Nezuko: Why Izuku?

Izuku: She finished the cure!

Tanjiro: Really?!

Eagle: Here! Izuku!

As the eagle came back with a syringe with the cure.

Izuku: Nezuko, I know it's not really safe but... Do you want to test it out?

Nezuko: S-sure, If it works I can eat anything.

Izuku: Okay.

As he poke the needle to her arms and injected the cure, after a few minutes, the cure started to take effect, Nezuko feels hot and turning to a hungry demon.

Tanjiro: It didn't work, I-

Izuku: Stop! Every medicine has a side effect!

Nezuko suddenly collapsed, and She turned back to being a human. After a few minutes she started to stood up.

Tanjiro: It... Worked!

Nezuko: Nii-san, It worked! I'm a human again!

Izuku: Now you can eat! What fo you want?

Nezuko*drooling*: All of the foods!

Izuku*sweat drop*: O-okay... But first a letter for Lady Tamayo. Here please bring it to her.

Eagle: Okay!

Izuku: Tanjiro please watch over her while I go to the market and buy the ingredients for the foods.

Tanjiro: Okay!

After that, Izuku returned and Nezuko ate everything he cooked, so Izuku cooked a different batch for the others, and They all ate happily knowing that there is a cure...