Why Did Rena Forget It?

Ting! Noong!!

The house bell rang, at the behest of Elvan's finger. The three of them were ready to wait what they were waiting for. They waited for the door to open, arranged themselves while holding several books of various types according to important material.

Elvan ruffled his hair, without needing to look in the mirror. He knows he's always handsome, "I'm really handsome, right?"

"Gosh..?" Davira and Elina, felt disgusted. Their lips opened, looking at each other, "If you're handsome? Your lovely, Rena will already accept you, duh?" explained Elina. "Iwuhh... are you both envious? Just tell me you don't have a handsome boy, like me?" Elvan replied, with his pretentiously handsome face, provoking their emotions to curse him again. But what is expected is not appropriate. Elina and the others chose to remain silent. It's better to give in than to fight, "Yeah... you're really handsome. But Rena doesn't even like you!"

"Huh, shut up! Rena will be mine! Nothing can change that fate."

Cleck!

The door was open. Turns out it was Jovin. She bowed and greeted, "hello brothers and sisters... I guess you guys want to find my Sis Rena, right?" Jovin guessed. Because she knows, the habits of his friends like them. Elvan reacted to this like a drunken person, he snapped his fingers and said, "That's true! We want to study together! As well as being brother-in-law... hehe!" His eyebrows repeatedly rose as if seductively.

"Ow! What's wrong van?" growled Davira. While punching his head, "sorry vin. Just be advised. There are recurrences for this child!" Davira's fist, shifted hard while pressing Elvan's head until it bent. How painful the blow was, but fortunately. Jovin was used to their behavior. "Ah! It's okay!" her hand waved, breaking up, "come on in!" They entered the house. Walking towards the living room with Jovin's direction, "My brother is in the room. So you guys wait here first. I'm going upstairs, tell him. OK?" he left, climbed up to the second floor of the house.

Just the three of them. They sat on the guest sofa, looking around the house. Elvan was amazed, this house was neatly arranged, even though Rena's parents were not in the house, "Tsk, tsk, tsk! Indeed, my future wife is the best! It's a complete package! Anyway!" "I'm sorry to see her," "even though she can be called a boarding house, you know? She's already the student council president, class president, participates in activities here and there, but he can take the time to take care of this house," Elina said, "if I were her, I would come up short? It's sickly."

"Ouch...! It's like you just met Rena?! It's normal, she's been given the burden of life since she was small," continued Davira, babbling while looking in the mirror, while fixing her hair. He turned to Elina and lectured, "We've known her since childhood. She used to have a bad fever? Typhoid again, until two weeks in the hospital. But what? Instead of being deterred, she's back as usual–"

"Typhoid you mean?" Rena asked, immediately went down to the ground floor, "you brought all the books? Complete? Can we start the lesson?" Rena is now standing next to the guest sofas. Right behind Davira. They fell silent, staring at the clothes and hair being worn. Regular color dress and straight hair on both sides of the neck. She was confused about it. Looked for faults on him, but nothing out of the ordinary. Until you think, what is the way he puts her hand? Because, he stood like a restaurant waiter, "friends?" Rena scolded.

"Rena? Why are you so beautiful? I'm an engineer so..." Elvan's smile kept appearing while looking at Rena. It feels like this heart is rushing fast! How beautiful, teasing her from the crook of Rena's neck, making her bite her lip, "Is this how it feels to see your ideal wife? Crazy! I can't stop!" Elven's heart trembled. The sparkle of love in a pair of eyeballs shows a reaction of affection. "Come on, let's just go to my room. My lil sister so busy in the kitchen. She had a unique project to do," Rena said. Take their attention to a conscious point. As soon as they woke up from drowning in awe, Rena went up to her room, "how funny..."

"Eh?" Suddenly all three of them realized it. They rushed up following Rena, "hoi, please wait!" they looked uneasy, feeling that Rena had been annoyed by what she had just done.

*****

Criik! Criikk!

The sound of bolts gluing with another metal tool. Jovin sat with the serious look she had created. I'm just confused describe the shape. Almost like an octopus, many eight sharp metal objects, standing against the spider-like machine body. Have a core body in the middle, semi-black and white? "I can't wait? How will Yuna react when she sees this robot? Surely she will like it!"

"Eh?!" Suddenly. Her cell phone rings. Jovin immediately picked up and answered, "Yuna? How was the training? Did it go well?"

"It's safe! Everyone loses! Btw it has to be done tomorrow. Don't just cancel it! I want to meet you!" Jovin smiled, "of course. Besides, Jovin has already prepared a present for Yuna."

"Huh?! Seriously?! What's that?"

"You will know soon! Yuna must really like it!"

"I like it the same as you the most! Don't you have to change my preference?" Jovin's heart is pounding! He even shook his head at the sweet words, "uu–Yuna!" shaking Jovin.

"Hahaha! It's been a while, ye! I want to change clothes first, as well as prepare something for you too. Bye-bye!"

"Eum!"

Click!

The call ended. She was still smiling, at Yuna's words just now. He touched his chest feeling that warmth, "Yuna... I really love you so much...."

BRRRRT! BBRRRRTT!!

"...? Yuna again?" She guessed while looking at the caller's name, "eh? Who is this?" after Rena. Her lil sister was also called by a strange person.

"Hello?"

*****

"Do you guys understand?" "I have explained according to the criteria of the book, I hope you understand," she asked, her hopes stated clearly. Because, "This is the third time I have explained." What is expected Rena. Elvan and Davira understood the long rope material, "ahhh? Ren? Aren't you angry?" However, Elvan's innocence was still preaching. It seemed like he was still empty, useless. "Of course not. Elvan," still. Rena's guess was right, Elvan still didn't get a point of light based on general book material, "don't embarrass yourself, if you don't understand."

"Are you afraid that Elina will mocking you?"

"I think Elina looks the same as you? I understand."

There is a saying, where there is a will there is a shortcut. So for three times the process of understanding the material. I also thought, how complicated this matter. Where we have to count the number of circles, calculate the area and volume. So?" They stared at there. It seemed like some good news was coming, "how about I overhaul this whole stupid formula based on my observations, my reasoning. Maybe we can get a shortcut with this complicated matter."

"What do you mean Ren?" Elina asked. Her eyes looked shocked. Her brows furrowed, she understood what Rena was talking about, "you? Create a short formula for this problem?"

"Yeah! I found another way that is short, simple, and easy to understand!" Rena took a sheet of paper, and put it in the middle of the table, "Come on! You must understand this way. Take note."

She tap of his finger, while tapping their desire to learn. They came closer, looked at the paper carefully. She started by drawing six balls arranged in a triangular manner, "well, if you look at this, if you look again, this is almost said to be a triangular arrangement. Right?" They nodded in unison, and continued, "well, this wants us to tie six balls together perpendicularly," adding a tie line at the end of the ball, "what's in question, is the length of the string that's wrapped around all this stuff," the pen Rena was holding, moved circling the picture, "up here understand?"

"We line each corner of the ball, and join them. So this looks like an equilateral triangle. Which means every angle in this triangle is 60°. And see," the pen tip pointed between the two balls in the middle of the corner, "if we put a line 90°, at this angle. Same as the opposite side. Like a mirror reflection?" It repeats additional lines at each corner creating a rectangle. "Like Ren's rectangle?" Elvan replied, pointing to the outline of the pen.

"That's right! You're doing great! Let's reconnect. Two degrees of this circle have appeared. That means only this unshaded part," Rena smiled, "I will be very, very happy. If anyone can answer how many degrees are in this part of the circle." "And you will also get a special gift! Whatever it is! I will do it for my best friend. But on one condition! You have to answer my question just now," what a bombastic offer! It was like meeting a magic urn.

They glared at him, as if they couldn't believe it, "Are you serious, Ren?"

"Of course!"

"You already know the answer?" Ask again.

"Whatever?" Elvan's mind was hallucinating, what gift is suitable, 'how about a new game console? Ah! No! Extra cassette?' Elvan shook his head, 'not that one!! Other! It's only one chance!' the brain inside the head is working hard! Thinking here and there, seeing others already at work looking for that answer. However... when he looked at Rena seriously, all his thoughts suddenly scattered into love. The desire to have and live forever with him, 'ahh! What if?' He immediately moved. His heart was knocked, to take his pen and write the answer, "I want her to be my girl!" He smiled, scratching the paper with a pen. Elvan felt very happy, imagining if he succeeded with his dream. 'I will get your heart Ren! I'll make sure of that!'

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Continued.....

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