When I traveled back in time to "Demon Slayer: Kimetsu no Yaiba", I couldn't even learn the most basic breathing techniques.
My grip strength was at the bottom, my vital capacity was insufficient, and my hand was shaking when holding the knife—the Demon Slayer examiner said "Next" and kicked me into the logistics department to be "hidden".
Everyone said I was a waste, even myself.
Until the first time I used a smoke bomb made of lime powder + wisteria flower poison to save three lives from a ghost.
Improving wisteria flower poison, developing regeneration inhibitors, designing solar metal trap nets, manufacturing ultraviolet lamp arrays...
While the pillars were still fighting with their lives and winding their swords, I had already used science to send the twelve ghost moons to the west one by one.
Wu Ke sent Shang Xian to hunt me, and I turned all his men into experimental data.
In the final battle, Wuhan asked me: "Who are you?"
I wiped my glasses: "An ordinary person who can't even learn breathing techniques. But science is my breathing of the sun."
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