The existence of the Fluorescent Lamp Flashlight can genuinely impact battles between humans and Demons to a significant degree.
Even if the sunlight from the fluorescent lamp differs greatly from true sunlight, and its power is much weaker, it's enough to allow most low-level swordsmen to easily kill common Demons.
"But this doesn't mean that killing Demons will be without danger from now on."
Qingshui said this after persuading Ubuyashiki Kagaya, who had intended to have all the Hashira bow and thank him.
"The weakest Demons were easily eliminated just now, but those stronger ones, they must be Alien Demons, right? They can endure the Fluorescent Lamp Flashlight for twenty to thirty seconds. With their abilities, they could completely use that time to escape or find cover.
And the Fluorescent Lamp Flashlight can only illuminate one direction, so the team members will still be threatened. If it's a stronger Twelve Kizuki, or even Muzan, this level of illumination would likely be even harder to eliminate them. Even if we made more fluorescent lamps, it might only suppress them, not kill them outright."
"That's already enough!"
Ubuyashiki Kagaya tightly clasped Qingshui's arms.
At this moment, he was very glad he had recruited Qingshui into the Demon Slayer Corps.
"I am certain that the fated struggle between humanity and Demons will end in our generation, it will end with you, Qingshui!"
Watching Ubuyashiki Kagaya and the Hashira's excited reactions, Qingshui touched his nose.
If they knew that the surprises he had in store weren't limited to just the fluorescent lamps, what kind of expressions would they make?
"Actually... there's more than just this one good thing."
Qingshui decided to drop another bombshell, so he drew his Nichirin Blade from behind his back.
Everyone's breath caught again, and they all stopped their movements, watching intently.
At this point, in their minds, Qingshui was probably similar to a certain blue robotic cat.
"Please look, everyone, this is a Nichirin Blade."
Qingshui gripped the hilt, concentrating his arm muscles, and simultaneously channeling Chakra to strengthen his arm. Then, he slashed upwards.
A brilliant sword light flashed, filled with intense heat.
The Nichirin Blade transformed into a crimson Red Blade.
"This terrifying power to turn the blade red just by grip strength... is this also a change brought by the Transparent World?"
Rengoku Kyojuro asked in surprise.
Excluding Qingshui, his strength among the Hashira was second only to Uzui Tengen and Himejima Gyomei, but he definitely couldn't achieve this.
"This is a Red Blade. I activated it during my fight with Upper Rank Two. Through absolute grip strength, the blade heats up from high-speed friction with the air, thereby activating the sun energy within the blade, further enhancing its threat to Demons.
Especially the Twelve Kizuki, their regenerative abilities are stronger, and the Red Blade can effectively suppress Demon regeneration. If combined with the fluorescent lamps, I think even Muzan wouldn't fare well if he took a strike."
Himejima Gyomei listened to Qingshui's explanation, stood up, and took out his Nichirin Blade from behind him—a giant axe and a flail connected by a chain.
"Let me try!"
Himejima Gyomei said.
He had just observed the changes in Qingshui's body muscles through the Transparent World.
The flail and giant axe swung, making whooshing sounds, even moving so fast they generated fire from friction with the air. Finally, the two weapons collided in the air, producing a crisp clang.
Himejima Gyomei stopped his movements and looked at the Nichirin Blade in his hand.
It had turned completely red, just a bit hot.
However, for a powerful individual capable of tempering his body in raging flames, this temperature was nothing.
"It worked!"
Iguro Obanai stared intently at Himejima Gyomei, exclaiming.
Qingshui, meanwhile, stroked his chin, pondering as he looked at the crimson Nichirin Blade.
In the original timeline, aside from Tanjiro, who temporarily activated a Red Blade due to Nezuko's Blood Demon Art, everyone else who activated a Red Blade only possessed that power after activating their Demon Slayer Mark.
This was because the Demon Slayer Mark significantly enhanced a person's physical abilities.
Now, Himejima Gyomei could activate a Red Blade, partly because the Transparent World allowed him to maximize his existing potential by coordinating his muscles, and partly because he was already incredibly strong.
"I'll try too!"
Uzui Tengen felt an itch to try and drew the golden twin blades from his back.
"You haven't activated the Transparent World, what are you trying?"
Shinazugawa Sanemi shot a glance at Uzui Tengen.
He actually wanted to try too, but he knew he couldn't do it with his current strength.
"Who says I haven't activated it?"
Uzui Tengen flamboyantly tossed his head.
"I was already on the verge of activating the Transparent World, always on the brink of a flamboyant breakthrough. Last night, when I was sleeping with my three wives..."
"Hurry up, stop talking nonsense! There are minors here!"
Shinazugawa Sanemi made an expression of jealousy and pointed at Tokito Muichiro.
Thirteen-year-old Muichiro looked utterly bewildered.
"Go on, then. Sleeping with three wives, and then what? I want to try it myself, see if I can replicate your experience."
"Ahem, Tokito, you're a bit too young for that method right now. Your body hasn't developed enough."
Rengoku Kyojuro said, pressing down on Tokito Muichiro's shoulder beside him.
"Oh, I see..."
Tokito Muichiro looked disappointed.
Meanwhile, Uzui Tengen also began his attempt.
"Sound Breathing, First Form: Roar!"
Uzui Tengen looked at his slightly reddened blades, clashed them together again, and then brought them down.
Another thunderous boom echoed.
His originally golden Nichirin Blades had also turned crimson.
Qingshui rubbed his chin again.
Uzui Tengen's strength was the second strongest among the Hashira, though he was still a tier below Himejima Gyomei.
His success was likely due to his unique Nichirin Blades; they contained gunpowder in a hidden layer, and the heat generated when the gunpowder ignited likely reduced the difficulty for him to activate his Red Blade.
"I'll give it a try too, Giyu... never mind, Tokito, lend me your blade to try."
Iguro Obanai also impatiently stood up, walked past Tomioka Giyuu, and borrowed Tokito Muichiro's Nichirin Blade.
He certainly couldn't achieve a Red Blade with a single blade and no leverage like Qingshui.
It would be much easier to do it like Himejima Gyomei and Uzui Tengen, by clashing two blades together.
"You've learned Transparent World too?"
Shinazugawa Sanemi looked as if he'd seen a Demon.
Perhaps that wasn't the right way to put it, as he had indeed seen many Demons.
"I had Qingshui and Gyomei guide me. After a few sparring sessions, I mastered it in combat."
Iguro Obanai said.
He was naturally gifted in this area; in the original timeline, he also mastered Transparent World during the final battle simply by hearing Gyomei's description.
Now, knowing the method, having someone point the way, and with the Score as an intermediate transitional stage, comprehending Transparent World was merely a matter of time for him.
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