[Multiple heroines, satisfying power-ups, battles, everyday life...]
After transmigrating into Demon Slayer, Kamiya Sosuke joins Sakonji Urokodaki's school.
But good times don't last. Because of his poor aptitude, Urokodaki advises him to become a Kakushi support worker instead.
“Sosuke, your aptitude is terrible. You can't become a swordsman. How about joining the Kakushi?”
“Master, you'll regret this!”
Kamiya Sosuke storms out and leaves Mount Fujikasane.
Luckily, he awakens a multiverse character template system.
He can fuse with countless characters from crossover anime, including One Piece, Naruto, and Jujutsu Kaisen.
Heard the Upper Ranks are ridiculously overpowered?
What if I told you I could cut through three thousand worlds with a single slash?
Turn my eyes, and I can build a Gundam with my bare hands?
I can even expand a domain, guaranteeing my skills hit their mark?
With countless templates fused into one, Demon Slayer will be getting an all-in-one, wildly overpowered demon-slaying swordsman.
Years later.
Urokodaki sighs. “Sosuke is the least talented disciple I've ever had. Years of hard training, and he still hasn't made any progress.”
Tanjiro: “Master, Kamiya-senpai did it! He split a boulder with just a branch!”
Giyu: “Master Urokodaki, the Hashira have been plotting to expel me and have Sosuke take over as the Water Hashira.”
The following year.
The selection at Mount Fujikasane comes to an end.
When the Kasugai Crows deliver two letters, one recommending Kamiya as a candidate for Hashira, and the other reporting that everyone at Mount Fujikasane survived, Ubuyashiki considers the circumstances and ultimately rejects the proposal to make him a Hashira candidate.
Upon hearing the decision, Kamiya Sosuke laughs three times:
“I laugh at Ubuyashiki's lack of foresight and Urokodaki's lack of wisdom.”
“If you made me a Hashira, I could kill Muzan on my own in a minute!”
During the final battle at Infinity Castle,
news arrives that Kamiya Sosuke has slain Muzan.
Sakonji Urokodaki is overcome with shame.
Kagaya Ubuyashiki dies full of regret.
With his dying breath, he sighs, “My greatest regret is that I never made him the Tenth Hashira.”
The Girl I Saved Can't Possibly Be a Murderer!
My Sister Is the Protagonist, So I Pursue Her Archrival Instead
Reincarnated as a White-Haired Little Girl, Imprisoned by a Yandere from the Start!
Transmigrated into a Romance Game: The Player Who Won't Fall in Love
Yandere Game Simulator
Abandoned, the Magical Girl Fell into Darkness and Became a Yandere
It's not even considered pretending to be a pig and eating a tiger. It's just a piece of cake.