Looking at the Hand Demon's attacking arm, Fang Hao merely curved his lips into a slight smile.
The Blood Demon Art, which the Hand Demon prided itself on, was probably only as fast as an ordinary person's 50-meter dash in seven or eight seconds in Fang Hao's eyes.
To adapt to the Extreme Speed brought by Thunder Breathing, Fang Hao's dynamic vision had already reached a certain level.
While he couldn't necessarily claim to surpass the Sharingan, ordinary high speeds no longer posed any threat to Fang Hao.
This was also why the previous attacks from demons appeared almost static in Fang Hao's eyes.
Drawing his nichirin blade, "Thunder Breathing, Second Form: Rice Spirit." Fang Hao unleashed several slashes in an instant, and several crescent-shaped arcs of lightning flew from all directions towards those arms.
In a mere breath, the blade light, intertwined with lightning, precisely sliced along the arms.
The perfectly controlled force wasted nothing, and with the "zheng zheng zheng" whistling sound of the blade, those arms separated from the Hand Demon's body, fell to the ground, and dissipated.
"It seems this Blood Demon Art doesn't have much toughness; cutting off the arms indeed isn't very difficult, but it won't cause any damage to its main body." During the battle, Fang Hao's thoughts raced, indicating that the Hand Demon truly didn't put much pressure on him.
The existence of Blood Demon Art made the combat styles of creatures like demons diverse.
During battles, it was inevitable that Demon Slayer Corps members would sometimes lose to demons weaker than themselves due to not understanding the abilities of a demon's Blood Demon Art.
Fang Hao was quite envious of the Blood Demon Art ability, but unfortunately, Fang Hao had no intention of becoming a demon.
After all, he possessed the legendary compendium, so he wouldn't lack similar supernatural abilities in the future.
However, the most crucial point was that demons had too many flaws.
Fear of sunlight, the urge to cannibalize, and being controlled by Muzan—the sunlight issue could be solved by the blue spider lily, but the cannibalistic urge and the problem of being controlled by Muzan were very difficult to resolve.
The only one who truly solved these two problems was Nezuko; Tamayo also broke free from Muzan's control, but that was because Yoriichi Tsugikuni severely wounded Muzan.
Of course, if he truly wanted to become a demon, the aforementioned problems could certainly be solved with the legendary compendium, but the cost-effectiveness was too low.
If he wanted to change his race, wouldn't becoming a dragon, a god, or a Saiyan be much more appealing?
However, Blood Demon Art was indeed good.
Blood Demon Art was an ability possessed by only a few demons, and it could be said to be an excavation of the demon's inherent talent.
For example, Upper Rank Three Akaza's Blood Demon Art was the ability to sense his opponent's fighting spirit, which stemmed from Akaza's excellent martial arts talent.
Blood Demon Art could also be seen as a reflection of the mind, much like the abilities of the Mangekyo Sharingan, both originating from inner desires.
Nezuko's hatred for demons made her Blood Demon Art—Exploding Blood—a power that countered demons; it not only had lethal destructive power against demons but could also heal humans poisoned by demons.
However, as for the Hand Demon's Blood Demon Art, its recovery ability was quite remarkable; as for other aspects, well, that's up to individual interpretation, but at least the Hand Demon was very satisfied with its Blood Demon Art.
"Why? Why can't I kill it? Damn it, damn it, damn it!" The Hand Demon's sharp claws frantically clawed at its own face, its pointed nails piercing its skin and drawing streaks of blood, but its powerful regenerative ability made the wounds disappear in an instant.
Just then, Tanjiro, who had been searching for the Hand Demon's weak point, finally moved.
His sudden, unannounced burst of speed instantly closed the distance between him and the Hand Demon.
The Hand Demon was greatly startled, but years of combat experience allowed it to react in an instant, subconsciously using its Blood Demon Art, and its arms rapidly proliferated again, surging towards mid-air.
And the naturally cautious Hand Demon didn't forget Fang Hao; its excellent regenerative ability and ample stamina meant it didn't have to worry about exhaustion, so it sent another large number of arms striking towards Fang Hao.
This time, however, Fang Hao didn't choose to counter-attack.
He swiftly charged forward, flexibly dodging several arms attacking him, and at the same time, sheathed his nichirin blade.
"Thunder Breathing, Third Form: Thunder Swarm."
The nichirin blade was drawn out by Fang Hao the moment it was sheathed.
In an instant, golden lightning enveloped Fang Hao's body and then surged in all directions.
Its speed was so great that it attacked those arms even before the thunderous sound produced by Thunder Breathing could be heard.
A continuous "zzzt" sound filled the air.
Under Fang Hao's astonishing control, none of the lightning touched Tanjiro, and the Hand Demon's arms shattered inch by inch under the Thunder Swarm technique.
"Eee… Ahhh!" The demon let out a mournful cry under this attack, and its pain clearly created an opportunity for Tanjiro.
"Die! Water Breathing, First Form—"
With his arms no longer an obstruction, Tanjiro, under Fang Hao's cover, advanced to the Hand Demon's front, and then a silver light flashed.
A blue phantom appeared on the blade, water ripples spread, yet it was merciless.
This fatal strike had no hesitation, directly slicing across the aberrant demon's neck.
"Surface Slash." As soon as Tanjiro finished speaking, the Hand Demon's head fell to the ground, and Water Breathing turned the Hand Demon's remaining body into ashes, disappearing into the air.
Fang Hao's eyes suddenly widened as if he sensed something.
The book in his mind slowly turned a page:
Host: Fang Hao
Strength: E+
Agility: E+
Constitution: E+
Perception: E+
Charm: D+
(Note: For healthy adult males, all values except Charm are E)
Talents: Swordsmanship Prodigy A
Skills: Thousand Languages C, Identity Implantation D, Thunder Breathing B, Demon Slayer C
Fang Hao looked at the newly appeared skill with surprise.
This was the first skill he had obtained since first activating the legendary compendium and self-learning breathing techniques.
He carefully flipped through the legendary compendium, where it was clearly recorded on one page:
[Slaying Demons]
[Reward Skill – Demon Slayer C (When fighting demons, Strength increases by one level)]
Although the skill's effect was relatively singular and its trigger condition quite strict, Fang Hao's joy didn't diminish in the slightest; after all, it was a skill, so it wasn't a loss.
Moreover, in the Demon Slayer World, it was relatively easy to trigger.
But a more important point was the legendary compendium's pattern for recording legends.
Fang Hao had killed many demons before, but there was no corresponding record in the legendary compendium until after he slew the Hand Demon.
No, to be precise, it was after assisting Tanjiro in killing the Hand Demon that the legendary compendium recorded this legend, which was very crucial.
"Is it because the Hand Demon appeared in the original work? Or because it was the boss of Mount Fujikasane? Or because I assisted Tanjiro, the main character of the plot?"
"No, it's also possible that I had killed many demons before and then provided an assist, which was just enough for one record…"
Fang Hao fell into a brainstorm.
He boldly speculated on the principle of the legendary compendium's recording, as this was the first time Fang Hao had seen the legendary compendium record a legend in real-time, which had great reference value.
He would now boldly hypothesize and then meticulously verify later.
As long as this situation occurred a few more times, he believed he would eventually thoroughly understand the legendary compendium's functions.
"Also, the test for Demon Slayer needs to be done as soon as possible.
I'll go test it in a bit.
A sudden increase in strength by one level during combat can be very fatal if the suddenly increased power isn't controlled well."