The Slayer Of Brightness

Pillar training 1

"Good evening tamayo-San. It's dangerous to leave the window open at night. But the moon looks quite beautiful today" A crow said, entering lady Tamayo's house through a window, shocking her.

"Very nice to meet you. I am ubuyashiki Kagaya's messenger crow." The crow greeted

"You are rather good at hiding, it took me so long to find you"

Tamayo kept silent for a couple of seconds
"How.....did you find this place?" She asked calmly. "People's connections. I looked up the previous owner of the house you bought. Then during the afternoon, I kept watch over yushirou-kun" the crow explained

"I don't plan on harming you, so don't be alarmed" the crow stated. ".......so why are you here?" Tamayo asked

"Hm, I sense a lot of distrust. Understandable,
I suppose it's hard for me to gain your trust like Tanjiro did" the crow stated

'What in the world are they planning? Ubuyashiki.....are you trying to deceive me?'
Tamayo thought

".....and yushirou?" Tamayo asked, concerned.
"Don't worry about yushirou kun. Look, you can hear his footsteps from here." The crow reassured her as she looked up to where his footsteps can be heard

"So how about we talk business then?  There's someone among the demon hunter corps that is well versed in demon physiology and pharmaceuticals. We would like you to join our research efforts. Can you work with us to defeat muzan? Please come to that ubuyashiki estate"

'You want me, a demon, to go to the demon hunters headquarters? In an all out war?!'
Tamayo thought while sweating

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A special training session began, it was called pillar training. Those who ranked lower then pillars trained with them one by one.

Usually, pillars would only train their tsugukos/successors and no one else. That was because they were already too busy with their duties. But ever since Tanjiro, Genya, muichiro, and Mitsuri defeated the 2 upper moons, the demons suddenly stopped appearing. It was like calm before the storm

So now pillars only have to focus on night patrol and day training. Which is what we're seeing right now

"Slow, slow, slow, slow, slow!" Uzui shouted
"The hell are you people doing?! I got no clue! Your stamina is slow as hell! This is just basic running man. If you're gonna be like this then beating an upper moon is gonna be a dream inside a dream!" He continued

"I didn't ask you to take a break! Go run another lap!!"

"Hey Uzui, don't you think that's a bit too harsh?" Tanjiro asked

Since Tanjiro didn't really have that much to teach he decided to participate in the pillar training. Since he already fully trained with Uzui, he passed through uzuis pillar training in a breeze

"Yes! They're all useless! They all have no substance!"

First, Uzui does the basic stamina training. Then, Mitsuri does the hellish flexibility training and muichiro does the quick movement training

Then Iguro focuses on sword skill revision.
Sanemi deals with the infinite pounding training and Rengoku deals with the power in your sword swings.

Shinobu does an interesting training. After she told Tanjiro her old plans on defeating upper moon two, Tanjiro begged her not to. She replied with a "after we started dating, I wasn't planning on following up with the plan"

But Tanjiro had an idea, he asked if for her pillar training she could make everyone drink the poison so that if a demon eats them, then the demon dies with them.