"The fires in southern Indiana have been going on for three days and have ignited large fields of corn that are about to be harvested, and Indiana Governor Georgia has declared a statewide state of emergency. According to preliminary statistics from insurance companies, the direct economic losses caused by the fire will be as high as more than one billion US dollars. Shares of Columbia, the nation's largest agricultural insurer, fell slightly after opening this morning, while the price of the Chicago Board of Trade's short-term corn contract rose slightly......"

Keiko sat in the corner of the café, enjoying a sandwich and black coffee for breakfast, while listening to the latest report on the fires in southern Indiana on the television not far away.

"Those poor farmers finally accepted their plan and took revenge on those who couldn't survive! Columbia Insurance Company is Monsanto's main agricultural insurance company when it was marketing. If a farmer buys Monsanto's seed products, he will basically get a good price for the agricultural insurance products of the Columbia insurance company, and this time, because of the fires in southern Indiana, the Columbia insurance company may have to lose a large amount of damages......"

However, all of this has nothing to do with Jingzi. She didn't turn around that day and go back to say anything to the farmers, but when she returned to the hotel, she sent a letter anonymously to the farm she had visited. The contents of the letter were printed out by a printer, and there was only one sentence on it: since it can't be sold, let the insurance company cover your losses. After that, Keiko never paid attention to that thing again.

"Have you done something useless again? When did you become so nosy yourself......

"Forget it, don't be so impulsive in the future!"

Keiko secretly reminded herself in her heart. On that day, because a farmer talked about his daughter's college tuition, I couldn't help but evoke some sad things about Keiko. It wasn't until she sent the anonymous letter that Keiko's mood gradually calmed down.

Keiko, who had calmed down, couldn't help but be a little surprised by her impulsiveness at that time, and she thought that she would no longer have such a luxury as compassion......

Keiko finished the coffee in her cup, and then left the fire behind her. She picked up her handbag and walked nonchalantly to the cashier to pay for her breakfast.

"Let's spend my energy on my dissertation, I've been here long enough......"

After taking the change from the cashier, he left the café without looking back and walked in the direction of the library......

……

Kichijoji, in the apartment of the Reina family.

"Huh!"

"Huh!"

"Huh!"

Reina, who is preparing for the upcoming high school entrance exam, is carefully checking her results with the answers to the test questions against the practice questions she has just completed.

However, as more and more checkmarks appeared in the exercise book, Reina couldn't help but get a little irritable. As the answer to the last test question was ticked, Reina, who was already on the verge of collapse, was completely defeated by herself. (The Japanese checkmark represents the error, and the circle is the sign of the right)

"Ah~~~ Ernie sauce, I'm really not the one who learns!"

Reina complained while dropping the pencil in her hand, and then lay on the table in pain, complaining to herself.

When Reina stood up again and wanted to relax first, she suddenly found that Sakurako, who was sitting in the living room, was looking at her with concern.

"Ah...... I'm so sorry...... Is it bothering you?"

Knowing that Sakurako should have heard what she had just complained, Reina said to Sakurako with some embarrassment.

"No...... I just look like you're working hard...... Are there any difficulties that I can do to help you?"

Seeing that Reina noticed her, Sakurako immediately stood up and walked towards Reina. When Sakurako walked to Reina's side, she raised her eyes and saw the checkmarks all over the test set, and the smart Sakurako immediately knew what Reina was worried about.

"Isn't it like you're studying, you look like you're in some trouble!"

"Hmm...... In the past, due to some things on the side of the office, I missed a lot of classes, so I could only borrow the notes of classmates who were close to me on weekdays on weekends to review. However, there are many things that I don't understand......"

"Oh...... You're preparing for the entrance exams to higher education, aren't you? It's not going to be this year, is it?"

"No, I won't graduate from my current school until next year, and although Reina-chan, who is in the same office as me, suggested that I apply for the entrance exam to Horikoshi High School, my brother thinks that I should still aim for my own goal of going to university. But now, I feel like even if it's Horigo High School, I don't have any hope at all!"

Reina sighed and said to Sakurako.

"Reina-chan, don't you give up so early?Isn't there still a year between now and next year?...... Why don't we try a little harder, maybe it won't be too bad?"

Seeing Sakurako smiling confidently at herself, Reina couldn't help but ask Sakurako with some curiosity.

"Sister Sakurako, do you have any good solutions?"

"There are no ways, but there is no way to easily grasp knowledge without effort. If you can trust me, why don't we figure it out together and see what your problem is?"

"Hmm...... Won't that take you too long?"

"No, living here has been taken care of so much by Mr. Lin and Lingna-chan, if it can help you, it can make me feel at ease!...... Although I have been graduating for many years, I am still a person who has come from here, and I think I can give you some advice!"

"That'...... I'll give you any trouble, Sakurako-san. Actually, I don't understand this question well, and I don't know how to start after reading it for a long time?"

Hearing Reina's question, Sakurako glanced at it slightly, then picked up her pen and gently drew a straight line on the triangle in the question. Then he looked at Reina with a smile on his face.

"That's ...... Yes...... I know that it would be nice to just calculate the volume here first, and then subtract the extra part. It's amazing, Sakurako-sama!"

"There...... There, when I took the entrance exam for colleges and universities, I was often tormented by such questions and doubted my life, probably because of this, I will always remember the conventional solution to this kind of problem!"

"It turns out that you have had the same experience as me, may I ask which university you were admitted to back then?"

"I was lucky enough to be admitted to the High School Affiliated to the Ocha Women's University!"

Hearing Sakurako's answer, Reina couldn't help but gasp in her heart. It's really amazing! I really didn't expect that this beautiful woman graduated from Tokyo's No. 1 Women's High School with an average deviation of 77.

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