Miku's P.O.V.

"Read this letter...after dinner". The words that Len said to her... what is so important about this letter?

So from last time. Miku went upstairs, for only one reason. To open the letter.

"I have another bad feeling... It's not a threat letter from what I think...but... I feel a very sad aura from this letter" I took out the letter from my pocket and put it near my chest, crumpling it a bit.

I went straight to my room and locked the door. My heart felt like it was being pounded... I felt hurt. [I can't even understand why he won't answer my question clearly when I asked him if he remembered the promise...]

Did I do anything that offended him before? Or is he just tired? The most possible question a girl could ask...Well why wouldn't I be worried of him? He's always playful when he and I were young. He would even talk non-stop when he eats dinner here. Is this puberty? Or he just hates me? He doesn't even remember my name.

Before opening the letter, I had to take a deep breath. I carefull teared the top of the envelope and slowly unfolded the paper... One of my eye was closed and the other was looking at the letter with fear. It shocked me... the contents of the letter were...

I had to read it over and over. I dropped the letter and moved back, stumbling on to my were streaming down my face. I covered my eyes with the palms of my hand. "Is t-this really t-true", I kept trembling in was a letter... from Kagamine Rin, Len's twin yet older than him by 4 years:

"Hey Miku,

Well how are you? Busy probably? Well I just wanted to say hi and I would want you to take care of Len until he can find a new home. My mom already contacted yours so you don't have a choice c(~w~c)
I'm fine here if you're wondering. I'm getting married with this guy named Kaito Shion! He's really nice and really trustworthy. He's actually my senpai in college, and well this and that. Though Len disagreed for a month about our relationship, but he understood me and was happy for me til the end. So anyways...I didn't write this to talk about my life, it might make you cry or depressed. And I didn't wan Len to know of this so he never looked at the paper...

If Len ever asked you your name, you'd be curious why, right? Well...a year after we moved here, Len has been stressed. He would always have nightmares during the night, and he would always wake up sweating and crying. Until one day, I heard him say "Miku..." in his sleep, then continued with the words "D-don't go...," I was worried and asked him of his dream. He said "I don't remember," well it might be true or not. Then a year later, he stopped having nightmares, though he still really loved you. I heard from my friend, Luka that many girls surrounded him, yet he wouldn't notice them.

Ah! Wait! That's not the reason I'm saying this...So here's the point now. When he and I were walking home, he said that he heard a girl singing, he said that he heard you singing, Miku. He kept running to that sweet music, I had to follow him. And I had to stop because the traffic lights were green, I told him to stop though he didn't listen. I had to shout out his name, then he turned around... What I didn't know was that he was still in the middle of the road. And to my surprise... Len was hit by a truck, his body was thrown to the ground, the truck ignored him and kept moving.

I memorized the plate number of the driver. I was very angry with him, but I was too busy with Len. His head and left eye was bleeding and what's worse was that he never remembered anything of his past! Not even me nor our family... not even you. It took us 4 years to convince him that we're his family and about his life. But it's just that...everytime we remind him of his past and of you... he would always have headaches or even cry the more that he tries to go deeper in his memory.

This may be a bad thing, but we had to tell him to fly back there. I want him to at least remember a few of his past memories even if it would hurt him. He told me "I want to learn more about my past and about this girl Miku you would always speak of... If I become near here, then I might be cured of my amnesia," well it wasn't my decision so don't be mad at me. My mom and dad approved and told him that I can't go with him. I had to finish my college. So here he is now, I don't want you to tell him of his past, but try to make him remember by staying beside him and helping him through things.

Please do help him. I want to have my old annoying brother back...and I'm sure you want to have you're fiance back. But as soon as he remembers everything, he has to go back here. And one more thing...I'm not sure when Len wrote this, but I found a letter under his bed, saying 'If I would ever break the promise I had with Miku, I would hate myself forever. And if I don't marry her, I would kill myself. I will always love Miku until I die. I would even love her after I die! She is my whole life and no one can stop that. Not even satan or Jesus!'

So my favour is that you please help him remember his past... and help him fall in love with the person who promised to. I want to see you and that blonde kid in the church, saying "I do". So please Miku... I know you're busy with school and stuff, but if you really love Len, you'd do anything you can.I'll text you when I have time or if I find anything related to Len here.

Arigato... and Sayonara Miku-chan,
Rin Kagamine"

"Haha, I promise you, Rin-chan... I promise that I will help him of his past. And I'd do whatever it takes to make him see me as a lover again," I wiped my tears after my promise. It was a task that only I could do. It might hurt me and Len, but it's worth a try.

A few seconds after calming myself, I went down to see my mother who was cleaning the dishes."Mom, I'm going to sleep. Goodnight," I kissed her on the cheek and went upstairs. But before I went back to my room, I had to turn back, looking at the guest room. Without thinking, I slowly walked to that door and knocked. "Len! Are you awake?"

I heard silence... "Yes, come in," I slowly opened the doorknob and took a little peek at him. I saw him lying down in bed, he was already able to put his clothes and items in the closet and table. He was looking up, only now did I notice how beautiful his cerulean eyes were. He had a very good figure and strong build. Why wouldn't girls surround him?

"So, are you alright here?"

"Yeah, thanks for letting me stay here"

We were both silenced. My heart was skipping a beat as I slowly gazed at him, he was really handsome,like a model. I had to snap back to reality, I might look like a pervert in front of his eyes. Luckily, he was able to break the silence.

"So... have you read the letter?"

"Yes, so Rin is getting married with Kaito, huh?"

"Yeah, you know him?"

"His mom and my mom were close friends during high school"

"Oh..."

He turned around, looking at me with his sparkling cerulean eyes , his hair was a bit messy, but it made him more handsome. I shook my head, [I only came here to say goodnight]

"So... goodnight then"

"Yes, goodnight"

Unconsciously, I walked close to him, closing my eyes.I kissed him in the forehead, the palm of my hand was holding his hair, preventing it from touching his forehead. A few seconds later, I felt him touch my waist and I suddenly opened my eyes. I realized what I did, it made me blush. [W-what was I thinking?!]

I moved my face away from him as I stood up. I looked at him, his eyes widened and he was blushing too. Maybe it was because he was surprised. My heart was beating loudly that I could hear it. I panicked, moving away from him.

"Wait, Miku!" He stood up, grabbing my wrist. I suddenly slipped and so did he. Ouch!, after opening my eyes I saw him on top of me and both his hand grabbed both my wrists. It made my heart beat even faster. He scratched his head as he was opening his eyes. I faced to the right, averting his eyes.

Suddenly, I felt something wet dripping in my cheeks. I turned back to look at him and it shocked me! He was looking at me intently while crying... his right eye was the only one that released tears. I remembered the letter Rin said, his left eye bled... this might be related to his accident.

"Sorry" his tears kept flowing. I had to do something, I put my hand to his cheeks, caressing him. "Shh... please don't cry, Len" he stopped crying and went off me. He sat down and looked at me with gloomy and depressed eyes. "Miku...", My eyes widened and I immediately stood up, I can't control my emotions anymore, my heart keeps on beating so fast. "S-sorry Len, I have to sleep now... Goodnight"

I rushed back to my room, shutting my door close and locked it. I jumped off to bed, my face was deep red. I felt like my heart was about to explode. [Today has been very hectic... I might as well sleep. I'll just forget about what happened... Len might forget it too], I slowly closed my eyes, trying to fall asleep.

Len's P.O.V.

"Miku..." before I was able to stop her, she rushed off. I was surprised by what happened, and I kept blushing. But it terrified me... the thing that happened earlier, why did I cry, you ask?

When Miku kissed my forehead, a weird flashback appeared in front of me.

[Flashback]

I saw a little boy in this very same house, but on a different room. He was lying on a bed, beside someone... a teal haired girl... Miku? I noticed that the blonde boy was crying.

"A-are you shur yoo wan mi to sthae hir M-Mikhu?" He looked at the girl. The girl smiled and kissed him on the forehead. "Shhh... please don't cry,Len... and yes it's okay if you stay here now"

[L-Len? T-that was me? When I was a kid?] the teenage boy thought to himself. Yes, it was him.

The young tealette continued as she brushed the boy's hair and moved closer to him. "Rin is really scary when she's mad. But she shouldn't hurt you, so sleep here tonight and I'll help you make up with Rin-chan!" Len's younger version stopped crying and smiled, putting his hand around the girl's waist "Thank you Miku"

They both giggled at each other and slowly fell asleep a few minutes. Both of them holding hands.

"..." Len was surprised by the scene. [So...she is connected to my past].

Snap!

Len's flashback ended, going back to the present was sitting on the floor all alone with silence as his only friend in the room.

"I better go back to sleep," I stood up, going back to my bed and slowly fell asleep, with the flashback still in my thoughts.

To be continued

Okay so my exams start next thursday until september 3 i think. So I might not post during those times ^^" I'll try to post chapter 4 before my exams and post chapter 7 of our promise too. But when I get back from my exam week, I might make a new fic, one shot only though.

Note: When the young Len said "A-are you shur yoo wan mi to sthae hir M-Mikhu?" not many understood right? Well it meant "Are you sure you want me to stay here, Miku?" so yeah... I'll be writing the notes here for everyone to understand.