This is gonna be a lonngg read~

"Are you sure that you don't know her?? Don't play with me Jiwoo!" He gigled.
"Y-Yeah. I'm sure that I don't know this girl!" I protested.
"Tch! How weird! One can't even recognize their 'own' old photo?! Strange!" he teased me.
"M-My own photo? Oh... I see. B-But... Had we met earlier in our childhood?!" I'm actually seeing Jungkook for the first time, but he already had a childhood photo with me! What really happened to me??!!   I smacked my head.
"I'm not sure whether this is you or Jihyo, cuz earlier and also till now, you two look exact same! But I remember Jimin bringing his cute little sisters along with him when we goes fishing and also ditching.. But I don't know what happened to you after that. I mean after Jimin's accident... I've heard that you and Jihyo stayed in hostel for some years and hopefully, we're able to meet you now.." I smiled doubtfully to his words...   I think it's time to unfold the past...

The next day morning, as usual, Jungkook came to walk me to the school. At last, when we reached the school, I was truly astonished! Jungkook's jaw was partially dropped meanwhile mine, was completely dropped!  I started to hear squeaky girls squeaking,  'Oh my Gosh! He's so handsome!'  'I think I had already fell for him!'  'What a pale skin!'  "Oh! Plz look at me Oppa!!' 
Tch! Why can't this girls stop wandering even though he has a girlfriend! And the next thing I heard was Rosé yelling back at the girls, "Hey you airheads! Don't you ever dare to stare at my boyfriend!! He's only mine! Only Mine!!" And she clinged tighter into Taehyung arms...

After the crowd around 'Taehyung' settled down, we ran to the 'charming' Taehyung..
"Woah! Taehyung! This hairstyle suits you a lot!! Daebak!" I complimented Taehyung, who tried a new hair style which that made all the squeaky girls turn to him again.

Taehyung's new Hairstyle:

I think I got my melted by his beauty, but suddenly, I happened to find a 'Jungkook', who's eyes was turning red while glaring at Taehyung.. I clinged into Jungkook's arms and whispered to him, "But no one is more handsome than my Jungkookie.. Hehe" He nodded happily and patted my hair softly.

"By the way.. I chanced to know that two birthday babies right here are waiting for their day to come...." Seokjin said teasingly while looking at me and Jihyo. Tch. I thought they would keep it as a surprise...
"Ya hyung... Thank you for reminding or else I would have forgotten it!" Jungkook grinned slightly.
"Woah! What an ideal boyfriend!!" I smirked irritably.
"By the way, there'll be a party right?" Hoseok asked us excitedly.
"But I heard that our Final examinations are going to start within this week.." Rosé suggested.
"Oh that's right! Then I'm not sure about the party.." said Jihyo desperately.
"Everything depends upon Jimin oppa. If he's willing, then we'll arrange it on our birthday itself. Or else... maybe after the exams.." I said disappointedly.

"After the exams?! Ah..." Hoseok seemed to lost his hope.

Soon after, we left to our own classes. During the middle of our classes, I saw Jungkook, Jin and Hoseok came to our class and dragged Taehyung, who was sitting between us, out of the class. I raised my eyebrows at them and Jungkook gestured at me, 'Just 5 minutes! We'll be back with him!' And they scooted. 

Jiwoo's P.O.V

Time: 7:55 a.m. Only 5 more minutes for school. Date: February 27. Oh! So, it's my birthday today! But what to do! Today, are our results for the Final examination!! I hate this school. Not even on our birthday, they'll give us a little freedom!! Damn!

My hands were trembling as the teacher came into the class with a 'bunch' of answer sheets in her hands. She banged the papers against her table and yelled, "None of you had scored grades, greater than C! Only a few of you had got A and the rest, after seeing the marks, come to my office!" My heart felt to be pounced out of my chest... The teacher started announcing the marks.

"Blah: C Grade!!

Blah blah: B1 Grade!!

Blah blah blah:  A Grade

JIHYO!: One of the students who had scored more than A grade! Congrats!!

JIWOO!!: One of the students, who had scored, LESS than D grade!! Here's your paper."
And she threw the paper to my table. "Come to my office Later!!"  Tch! Dang.

I peeped into 'the confident Jihyo's' answer sheet. WOAH. How annoying!! 99.8%. Why does she need to study like this?! Although we're attending this school, just for a fun!
I wonder today is my real birthday or not?? Cuz no birthday presents, no birthday wishes, only scolds, advices and counselling for scoring lower marks! Tch! What's wrong with this world??!

I went to home with my 'junky' answer sheet and fearfully approached Jimin oppa, where Jihyo, waved the flag of success called '99.8%' and happily hugged Oppa! How can a sister tolerate this?!  
I lowered my head in dismay and only showed him my marks. He took the paper and gave me a death glare. He lifted my chin up and asked, "Jiwoo??!!"  I nodded but before he said something, my eyes got teary. "Why are you crying?? Did I harm you?? The only thing you are expert at, is crying and acting innocently! When are you going to grow Jiwoo? When can Oppa be proud at my youngest sister Jiwoo, as my other sister Jihyo?? Answer me!" He yelled at me with red-rimmed eyes. I went speechless and continued weeping. "Didn't you hear me? Jiwoo?!"  I cried aloud and went to my room and bashed the door. I cried so hard that usually, Jimin oppa doesn't get so angry after seeing my marks but I don't know what's the matter now! Maybe due to final exams! B-But.. This is too much!

Jihyo's P.O.V

"And what about you Jihyo? What do you think you are doing??"
"O-Oppa.. What did I do?? I scored g-good marks! Don't you see it??" I showed him my answer sheet. He shrugged it off before his face.
"Don't you remember me telling that, whenever you study something, you have to call Jiwoo along with you and have to teach her something." Jimin oppa caught me too.
"B-But oppa.. Jiwoo won't take study matters seriously! Whenever I called her, she managed to escape from me!" I protested but the fact is that, I had never called her along with me for studying. Hehe.
"Then why didn't you told me? She'll obey whatever I demands! So you must had told me! Why didn't you??" Earlier he turned against Jiwoo, now he's against me!  What is his problem??
"Uh.. Oppa..."
                         
                          Ding Dong!

I rushed to open the door before Jimin oppa would slap me claiming any other stupid reasons. 
"Jihyo! Wait! Call Jiwoo too. It's turning dark. So, it's not healthy for you to open the door alone." Jimin called out before I opened the door.
 "Hmm? Then why are you standing there? If you are concerned that I'm a girl, then why couldn't you open the door? How strange!" I mocked him.
"Nope. You both are the ones to open it! Now don't waste time and go call Jiwoo and open the door!" He seemed to be pretty excited.  What the hell is it now?!
I opened our room door and saw a 'sobbing Jiwoo'. Haha. I told her that someone had came outside and we should open the door. She refused to come but I managed to drag her to downstairs. We opened the door and...

 SURPRISE!!

SAENGIL CHUKAHAMNIDA
SAENGIL CHUKAHAMNIDA
SARANGHANEUN JIWUA JIHYO...
SAENGIL CHUKAHAMNIDAAAAAAAAAA 

I was truuuuly, truuly astonished as my heart, which was partially out when the exam grades where announced, came completely out of my chest!! I can't believe this! How can one prank in such a way!! We gave death glare to Jimin oppa who was chuckling from behind, feeling proud about his extra-ordinary acting!
"Sho shorry!! Oppa had to do this.. only because of your boyfriends!"  Jimin oppa said and I gulped. 
"S-So.. you know about our relationships??" Jiwoo asked while she didn't even blink her eyes which was totally blanked out.
"Hmm yeah! Moreover, I'm a Mafia right? And our school, partially belongs to us right? So how come I'll not know about my little sisters boyfriends??" said Jimin oppa while winking at Jungkook and Jin where Taehyung and Hoseok were giggling so hard from behind.. Hmm.. I see.. So they both were the traitors! You had done enough, Mr. Taehyung and Mr. Hoseok!
Jimin oppa gestured us to hug him by slightly nodding his head. We went to his embrace and hugged him tightly. He calmly whispered to us, "Happiest Birthday My Little Princesses... Love you lots!" He patted our hair affectionately.  Moreover, an intense guilt started to develop deep inside my heart while feeling my brother's affection towards us... 

Yoongi, who was touched in our sibling relation, took out two cute birthday hats and placed it in our heads and said, "Happy Birthday Jihyo & Jiwoo!" with a warm smile. I felt so complete by all my dear ones' presence right now, where I believed that my birthday this year had already spoiled! They all are so sweet... Rosé, Jisoo unnie and Dahyun were also present there. 
Seokjin approached me with a cute little smile and gifted me a cute Branded Watch. I was so delighted that I almost hugged him but he stopped me and pecked my cheeks. My ears started getting so red, that I couldn't control my embarrassment. I also found a shy, grinning Jiwoo with another present in her hand, which was probably gifted my Jungkook. Such a caring and sweet boyfriends!!

Dahyun placed the birthday cake in the dining table and asked, "Aren't you guys going to decorate the house?? Although, it's a party right??"  
Everyone turned to us and Rosé said, "Oh! That's right! We haven't thought about that!"
"Then why waiting? Come on! Let's do it together!" Said Jisoo unnie while grabbing me and Jiwoo who were sitting, chilling in our comfy.

Everyone seemed to be very busy with the decorations. And we also had a lot of fun..
I think it's the right time now... So sorry but I've to do it...

When no one was noticing me, I slowly went to Jimin oppa, who was helping Jiwoo for blowing the balloons. I dragged him from there but Jiwoo stopped me and asked, "Ya! Don't you have eyes?? He's helping me! Take him later!"  I blinked scoffly at her. She gave me a desperate nod. 
"What's the matter Jihyo? Where are you taking me??" Jimin oppa asked me as he didn't want to spoil Jiwoo's mood by his absence.
"I'll tell you when we'll reach there.." I grinned happily at him.
"Surprise??" He asked excitedly.
"Uhm.. Yeah!! A huge Surprise!" I replied him delightedly.   
But unfortunately, this will be his most unforgettable surprise..

We reached where I was planning to take him. It was a lovely, warm beach where hungry wind was blowing through our hairs softly.  
"Oppa!"
"Hmm?"
"Today was a really special day for me. I don't know how to describe it to you but, I enjoyed it a lot. I was a bit irritated when I found that you was pranking on us but still, you cares a lot for us... Thank you so much..."  I said in a low voice as I didn't want any others standing there to hear us.
"You are always welcome dear.. You and Jiwoo are the only reason I'm living in this world.. By the way, what's the need for a 'thank you'?" He raised his eyebrows playfully.
"No nothing.. I just.. felt guilty all of a sudden.." I bent my neck dizzily..
"Guilt? What do you mean??" He asked me confusingly.
Soon, small drops of tears started to shed from both of my eyes.
"J-Jihyo.. Are you okay??" He turned to me worriedly.

"Hands up! Do not move!!
You are under Arrest!!"