Demon Slayer: The What-If World of Kaigaku of the Upper Moons

Name: Demon Slayer: The What-If World of Kaigaku of the Upper Moons
Author: Woodpecker hh

鬼灭：稻玉狯岳的if世界

by Woodpecker hh (啄木鸟hh)

Status: Ongoing
Length: 887k Words
Genre: Anime Fanfiction
Updated: 28d ago
English: Request a translation

Read on Fanqie

Synopsis

The protagonist of this story is Kaigaku from Demon Slayer. Please don’t read if you dislike him.

I’m a Kaigaku-top fan, so there are many suggestive moments with Kaigaku in the submissive role. Everyone has their own tastes, and the characters may be out of character. Some readers may not like the plot, so I apologize in advance. If this isn’t your thing, it’s best to stop here.

Here’s the synopsis:

What if, in one world, Kaigaku’s fate took a different turn?

What-if world one: Kokushibo picks up a cat (ongoing)

On that snowy night when fate veered off course, Kaigaku grabbed the hem of a demon’s robe. From then on, he began a life spent alongside demons.

The Infinity Castle raises a child, and a Demon Slayer Corps spy features in the plot. The demons are set to win, and Kaigaku will become a demon, but his identity as a spy will not be exposed.

The main story has a found-family, everyone-dotes-on-him vibe, while the extras focus on pairings.

What-if world two: When a cat wanders into the Water Breathing group

After encountering a demon at the temple, Kaigaku met someone who wanted to kill him while he was wandering. He fought back with everything he had and killed the person who claimed to be a “transmigrator.”

The transmigrator left behind a monster called the “System,” completely changing Kaigaku’s future.

On Mount Sagiri, a hooked finger becomes a precious memory, and falling tears express pure love.

If gods truly exist in this world, please give us the chance to be happy.

What-if world three: To be decided

Stats

279Chapters

2.9kReads · 30 days

70.7kReads · all time

220Shelf adds, last 14 days

8.4Score

<1 ch/weekPace

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Reader comments 105

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It's Kaijin raised by the Demon Slayer Corps! What a delicious premise! I can't eat anything else after this QAQ Kaijin is so loved, it's so reassuring. I feel like he'll grow up to be spoiled and arrogant like Mei ≡ω≡/ Speaking of which, will Inosuke grow up with Kaijin and become the two Demon Slayer Corps tyrants, or will Inosuke reunite with Kaijin in the Demon Slayer Corps?
80 likes9mo ago
I've found another great article! These simple, unpretentious covers are the easiest to find amazing content 😋 The author writes so well and is so adorable 🥺 I've seriously and repeatedly reviewed it 🤤 This is a must-read for fans of the "Kuai-chan" series! The author's writing is excellent, updates frequently, and the descriptions are adorable. All Kuai-chan fans, come read the author's work!
46 likes9mo ago
The author writes so well! Reading it late at night warmed my heart; it's so heartwarming and gentle (/≧▽≦/). The author's writing style is truly excellent; the warmth made me feel like I was in heaven, it's so beautiful (๑°3°๑). There are a few minor angst moments, but overall, it's mostly sweet, so the angst is negligible. The author writes so well, please don't stop updating!
35 likes9mo ago
This is such a delicious meal! The author writes so well! I'd love to see side stories for characters like Kuro Kuai, Tong Kuai, Xing Tao, Water Breathing Group Kuai, All Kuai, and the Movie Viewer. The author's writing is truly delightful! It would be even better if there were more daily updates! 💕💕💕
34 likes5mo ago
Oh my god, I'm so cute! Island Kaigetsu, how can you be so adorable? 😭😭❤️❤️ Although only the first part is written, it's clear this is a great book with unlimited potential. It's definitely in the top 5 of the Kaigaku fan list (because it has a bias towards the older sister, the audience will be smaller, but I personally think it's great). It would be a waste for Kaigaku fans not to read it!
34 likes8mo ago
What a wonderful story! The writing is truly excellent. Kaigaku's transformation feels so realistic. I love this family bond. Kaigaku didn't become family because he was forced into submission; those who are forced into submission only become excellent subordinates. It was Kokushibo who discovered Kaigaku's talent.
22 likes7mo ago
I highly recommend everyone to watch it! It's so incredibly beautiful!!! I am someone who rarely writes reviews. Being able to write is enough to prove my liking for it (personally only). It's at least in my top three. I can only say that this book is one of the most unique among all the works by Kaigaku that I have read. Because most of the Kaiyue stories are about Kaiyue's rebirth.
16 likes8mo ago
I have a feeling this book will eventually climb into the top three of all books about Kaigaku—it's a victory for my favorite author! I initially thought it would be one of those silly stories, but it's not out of character at all! (Very importantly, it's not the kind of weird behavior.) Wow, it really isn't mindless and is actually quite logical. What I appreciate most is the lack of overly complicated vocabulary; it's concise, clear, and not verbose…it's my favorite writing style! 🥺
15 likes8mo ago
This is absolutely fantastic! It focuses on Kaigaku, and the entire story is devoid of any angst. Kaigaku receives the best he can hope for; there's absolutely no angst. He receives absolute favor and recognition from the Oni clan. While it starts off a bit "dark," Kokushibo later really spoils him, and Kaigaku is absolutely fearless. Muzan also dotes on him.
13 likes4mo ago
The author writes very well, with a great pacing—not too fast, not too slow. I'm really looking forward to Kaimi and Ichigo's meeting! Author, keep it up! Please finish it! Don't stop writing! The emotional pacing is also good, perfectly capturing Kaimi at this stage. The characters aren't out of character either. This is my favorite Demon Slayer fanfic so far.
13 likes8mo ago