Reincarnation as Lower Rank Five in Demon Slayer

Li Lei stopped cultivating in the courtyard, looked at the peaceful woods around him, and couldn't help but feel a sense of感慨 (gǎnkǎi, a feeling of mixed emotions, including regret and reflection).

"Mount Natagumo at night is really quiet and eerie. Even after living here for so long, it still feels like there are ghosts around."

"Wait a minute, the ghost looks just like me!"

"Oops, I was careless and didn't flash."

"But as a ghost, to go to such lengths as me, there's no one else like me."

"No one else, no one else, no one else..."

"Who's speaking?!"

Hearing the unknown thing repeat his words, Li Lei was startled and looked around abruptly, turning his head repeatedly to look around.

At this moment, Li Lei frowned slightly, wondering who was speaking.

I looked around but didn't see anyone.

Apart from a plain-looking crow in the tree and ordinary trees all around, there was nothing else.

"Wait a minute? Just an ordinary crow!"

Li Lei instantly realized the key point and looked up at the crows in the tree.

Noticing that Li Lei was watching it, the crow turned to look at Li Lei, tilting its head in confusion.

"No one else, no one else, no one else."

Seeing Li Lei staring at him, the crow immediately made the same sound it had just made.

"Uh...it's you." (ー_ー)!!

At this moment, Li Lei was speechless. He hadn't expected that it would be a crow that spoke.

"Where did these crows come from? Who raised them? How dare they run wild here? Don't they know this is my territory?!"

"Master...Master, hello."

At this moment, the crow stammered.

"Oh! So it's mine."

Upon hearing his master's words, Li Lei immediately realized that this was his crow.

After all, over the past ten years, his flock of crows has grown from a dozen or so to more than a thousand.

With so many crows, all of them the same black, it was difficult for Li Lei to distinguish them.

Therefore, Li Lei could only discern their true intentions based on their attitude towards him.

"Alright, go play somewhere else."

Upon discovering that it was his own crow, and one that had just learned to talk, Li Lei could only tell it to go play somewhere else.

"Sigh—my Spider Mountain is almost turning into Raven Mountain."

Li Lei shook his head and walked towards his room, because it was almost dawn.

Not long after Li Lei entered the house, a yellow light appeared on the horizon, illuminating the silent forest. The Natian Spider Mountain under the sunlight was full of vitality at this moment.

Inside the house, Li Lei looked at the ancient tree covered with blood-red wisteria blossoms and adorned with Nichirin Blades, his face filled with anticipation.

It hopes that the ancient tree, which it has parasitized and transformed into, will be able to adapt to the sun and overcome it after prolonged close contact with the solar energy contained in the sun blade.

I'm not sure if my method will work. After all, while the Nichirin Blade contains solar energy, it's not actually that strong. With that little energy in the blade, the chances of overcoming sunlight are slim.

Furthermore, given the precedent of Muzan, the Demon King, failing to overcome sunlight even after nearly a thousand years, Li Lei's idea of ​​using dozens of Nichirin Blades to overcome sunlight is even more impossible.

Although it was impossible, Li Lei still did it, just in case he succeeded!

Li Lei spent seven years conducting this experiment, during which he constantly "borrowed" the Nichirin Blades from the Demon Slayer Corps members he encountered to carry out the experiment.

Over the course of seven years, Li Lei's act of stealing the sword became widely known within the Demon Slayer Corps, and was even once considered a provocation by the Demon King Muzan against the Demon Slayer Corps.

Therefore, the Demon Slayer Corps dispatched five Pillars to lure and ambush Li Lei.

But all attempts ended in failure, and even the last encirclement ended with the "loss" of five Pillar-level Nichirin Blades and the knockout of five Pillars.

For this reason, Li Lei is considered by the Demon Slayer Corps to be Muzan's direct Upper Moon, and is the only Upper Moon that the Demon Slayer Corps recognizes so far.

Li Lei's formidable strength put immense pressure on the Demon Slayer Corps' higher-ups; after all, if one Upper Moon was this powerful, the others wouldn't be much weaker.

This left the Pillars and Master of the Demon Slayer Corps somewhat desperate.

Therefore, the Pillars of the Demon Slayer Corps spent the following time training and slaying demons relentlessly.

……

Inside the house on Spider Mountain, Li Lei reached out and touched the red tree trunk covered with Nichirin Blades, then looked up at the window beside him.

As if making a decision in his heart, Li Lei went to the window, opened it, and let the sunlight stream into the room.

Bright sunlight streamed into the room, making it luminous. Li Lei, avoiding the direct sunlight, hid to the side. Even so, his entire body was still burned by the reflected sunlight.

On the other side, the ancient wisteria tree, formed from Li Lei's parasitic flesh and blood, faces the sunlight directly.

The morning sunlight caused the ancient wisteria tree, which had been transformed from parasitic flesh and blood, to burn rapidly.

"Holy crap, that's incredible!"

Li Lei was shocked. He immediately pulled the curtains tight and closed the windows to prevent his own flesh and blood from turning into ashes.

After all, this ancient tree with blood-red wisteria blossoms was formed from most of its parasitic flesh and blood, and contained nearly half of its power. If it were to be destroyed by the sun, it would probably be devastated.

"Oops! That was close. I almost lost half my power. The way sunlight suppresses demons is terrifying!"

Li Lei looked at the shrunken, parasitic wisteria tree with lingering fear, and felt a pang of sadness.

"It's gone, one-tenth of its power is gone."

"Wait, the Nichirin Blade stuck in the ancient tree of parasitic flesh and blood wisteria seems to have changed."

Li Lei was startled when he saw the Nichirin Blade, which was stuck in the ancient tree and emitting a faint light.

"This is?"