Demon Slayer: I Save Shinobu Kocho with Laser Weapons from the Start

[Infinity Castle from the start]+ [Mastering the technology of the future]+ [Changing regrets]+ [A perfect ending]+ [What kind of Breathing Style do you use? Uh... Light Breathing?]

Qin Feng was one of the top scientists of his era. After developing a laser weapon, he watched as the floor tiles beneath his feet suddenly turned into tatami mats... and vanished?

After a dizzying moment of weightlessness, he opened his eyes to find himself standing in a city that twisted endlessly! Man-eating monsters surrounded him!

Just as despair set in, Qin Feng turned his head and spotted the laser weapon hovering beside him!

Qin Feng: I don't know what happened, but this is a sure win.

Muzan: Why do I suddenly sense such a terrifying presence...

Nakime: Looks like some unknown creature was teleported here. It probably won't be a problem...

As Qin Feng searched for a way back, he suddenly spotted a pond full of lotus flowers and slowly pushed open a door.

But when he stepped inside, he saw a dying girl dressed in a colorful feather robe, with a butterfly ornament in her hair...