Achievement of Five Kills in a row

"Huh, I thought you would make a difficult question." Nino breathed a sigh of relief in his heart, "This elementary school math problem can be calculated in a matter of minutes."

"Asakawa-san." Yotsuba raised his hand and asked "If I answered correctly, could you teach me a new magic trick?"

Naoki nodded: "Yes."

By the way, with your IQ... The five of you definitely can't solve this grass-eating cow problem.

Among the five sisters, only Itsuki frowned, vaguely aware of the pitfalls of this elementary school math problem, but didn't say much, and took a pencil and started counting.

The living room quickly fell silent.

Naoki took the miscellaneous book and read it silently.

After a while.

"I already knew it!"

Nino suddenly stood up, raised the scraping paper in front of Naoki, lifted his chin, revealing a snow-white touch and smooth neck, and the corners of his lips lifted slightly: "Bastard Asakawa, what else do you have to say?"

Nino's math grades weren't great, and now she was the first to find the 'exam questions' created by Naoki.

Then...

"Wrong answer, 0 points."

Naoki glanced at the answer and said calmly.

"Am I wrong?" Nino bent down to approach Naoki, the scent of the girl's body wafted through his nostrils, she gritted his teeth, and shouted, "Have you seen clearly, how could I be wrong!"

Naoki closed the book in his hand, and said, "I said at the beginning that grass grows every day. According to your calculations, the grass has turned to forage, right?"

"Ehhh." Yotsuba's exclamation sounded, "So it's like this, I was wrong too."

Nino opened his mouth and wanted to refute, but found that she had nothing to say. It is true that grass grows and cows eat it. If grass was only eaten by cows and grass did not grow, the world would have long since been destroyed.

"Can this kind of question count?" Nino's tone was annoyed.

"Of course." Naoki said "Shall I show you?"

"No." Nino sat back on the sofa, "I'll count myself."

The living room was silent again.

"Miku."

Naoki suddenly shouted.

"Hah?" Miku looked up, "What?"

Naoki said, "Don't bite the pencil."

"Why can't you bite?" Yotsuba asked curiously.

"Bite a pencil can cause lead poisoning."

Nino who furrowed his brows and thought about the answer of the cow eating graze, was dumbfounded when she heard those words. She couldn't help but laugh, and said disdainfully, "Are you an idiot?"

"What's in the pencil is graphite, not lead!"

"There doesn't seem to be any crab meat in the crab meat, but it's actually fish meat. Crab meat is so big, how many crabs does it take to make it!"

"That's right." Ichika took a bite of the cake and said faintly, "Clay is not earth either."

Itsuki said: "Sensei said that soda ash is not lye, but a kind of salt."

Miku raised her hand and her voice was even: "Whales are not fish."

"Eh?" Yotsuba looked left and right, faltered for a moment, and suddenly his eyes lit up, "A single dog is not a dog."

The five sisters looked at Naoki together.

Naoki's face sank: "What are you looking at?"

"Asakawa-san knows that."

"The pencil string is graphite, isn't it." Naoki said nonchalantly, "But the paint on the outside of the pencil contains a small amount of lead."

The reason why pencils were added with lead, was because in ancient Rome, people at that time actually used lead blocks for writing. Upper class nobles were prone to lead poisoning.

In the 16th century, graphite was accidentally discovered. Since the technology at that time was not yet developed, the difference between graphite and lead was not recognizable, so graphite was misunderstood as 'black lead'. Hundreds of years later, the name of the pencil has spread like this.

Lead poisoning by biting a pencil is not a cause for concern. In fact, there are many examples of lead poisoning caused by smoking pencils in pediatrics, so it's okay to not bite a pencil, but you can.

Naoki looked at Miku: "So you shouldn't bite again in the future."

Miku looked away: "...Understood."

Five minutes later.

"Impossible."

"Can't."

"Asakawa-san is too much to play with us like this."

"When grass grows, it must be eaten at the same time…" Yotsuba looked up at the sky and muttered to herself, "So pitiful."

Bullshit, the cows are squeezed every day, why don't you say sorry!

The five sisters were defeated, and Naoki achieved five consecutive kills.

"Bastard Asakawa." Nino put his hand on his chest and said in annoyance, "This question is really elementary school math? Are you lying to us?"

Naoki did not defend, took out his cell phone, found the original title on the Internet, and then handed the phone to the five sisters.

"See for yourself."

A look of embarrassment quickly appeared on Nino's face.

Nino was truly sorry that a second year high school student couldn't even answer a fifth grade math problem.

"Do you want to admit defeat?"

Naoki looked at Nino.

"Hmph, of course." Nino turned his head and hummed, "Of course I counted what I said."

...

After overcoming the biggest thorn, Nino, the teaching task could finally begin smoothly.

"Give me your entrance exam paper first."

Naoki said that he already had an idea in his mind about how to teach.

Naoki carefully read the exam papers of the five sisters, and as expected, as Nino said, none of them made it to the pass line. Among them, the best scorer is Miku, who has 30 points in the history test. If the question is from the history of the Warring States period, it might pass.

But with Miku's character, even if the entire history of the Warring States period was put to the test, so as not to attract attention, she would still deliberately ask the wrong questions, right?

"Just say so if you want to give up." Nino leaned back on the sofa and said disdainfully, "By the way, you can't teach five people at all, can you?"

The other four sisters turned their heads.

"You made a mistake." Naoki replied calmly.

"What?"

"I don't need to learn new knowledge now, the job is to consolidate and revisit old knowledge… Teaching is just an aid, and helping all of you find ways to learn is key."

Naoki looked at Miku and praised: "For example, Miku, history is very good, as long as you work hard, history can be completely passed."

Miku looked away, feeling a little guilty.

Naoki continued: "There is one Ichika, and her math scores are also very good."

"Huhh, I was praised by Asakawa's friend." Ichika answered with a smile.

"Don't talk while you eat."

"So evil..."

Naoki looked at Itsuki again and said, "Itsuki's science is pretty good."

Itsuki lowered his head: "It's actually quite ordinary..."

Naoki looked at Nino again: "And Nino, your English grades are very good."

At least among the five sisters, every time Nino took an exam, English could get the highest score among the five sisters.

"Huh." Nino lightly snorted, turning to look away, her pretty face slightly blushing, "Don't think that I will forgive you if you compliment me."

"Asakawa-san, what about me?" Yotsuba asked, raising his hand.

Naoki looked at the calculated zero point, and was silent for a few seconds: "…You have the most room for improvement."