Here's an early birthday present for Rin and Len. This is a story based off of one on my favorite Kagamine songs, Trickery Casino by Hitoshizuku-P. The chapters in the story will be a lot shorter than in my normal stories, so I hope that's okay with you all. I'll update this story everyday until I'm finished (which will be in about 6 or 7 chapters).

Rin's POV

"You look absolutely beautiful in that dress!" my best friend Miku squealed, as I walked out of my changing room to show her my new dress. It was a pastel yellow that fell down to my ankles with ¾ sleeves. Along with it I wore a simple white sweater and some black flats.

"Thank you," I smiled, as twirled around in my dress. Mother, who stood behind Miku, nodded approvingly.

"I'm so happy to have a stunning daughter like you," she said, as helped me stick a white headband with a bow on top into my hair. My cheeks turned a bit red from embarrassment, but I was still happy to get the compliment.

"We should hurry!" Miku said, pointing at the clock hanging on the wall. "Len's party will start soon, and we don't want to miss it!" Miku opened my bedroom door, and motioned for me to hurry.

I quickly thanked Mother for helping me get ready and the two of us headed outside, in a rush to arrive at Len's house on time. Len's house was only a few minutes walk away, but Miku and I liked to arrive early to talk with Len's mother.

As we ran towards his house, we were careful not to ruin our dresses. Miku pulled up sparkly, blue dress, so she could run faster. I did the same, and soon we arrived at Len's house.

His family mansion always amazed Miku and me. It was at least twice the size of both Miku's home and mine. Luckily, it was only a few minutes away from both of our houses, so we visited Len regularly.

He was one of my best friends. Len always laughs and he's so smart. His mother doesn't even send him to school because the classes would be too easy for him. Miku and I don't go to school either, but that is because we prefer having class with just the two of us, and having a private tutor teach us.

I have known Len since we were four, when his family moved to this area. When we were little, his parents would always visit mine, and Len and I would play together. For a long time before Miku moved here when we were ten, Len and I were inseparable.

In my bedroom, there is a photo of us when we were 7. I was supposed to take one with my family and Len with his, but the two of us insisted that we took the photo together. We even threatened to get our new clothes dirty if we couldn't take the photo together. As we expected are parents agreed with a smile to take the photo.

Miku and I walked up to Len's front porch and I knocked on the door. We waited for a moment until the door opened.

"Hello girls!" Mrs. Kagamine said smiling opening the door, as she motioned for us to enter the large mansion. Miku and I walked inside and observed the lavish decorations for Len's birthday party. Golden streamers hung on the walls, along with gold and silver balloons littering the ceiling.

"Everything looks so pretty!" I said, admiring the hard work that gone into making the party this magnificent.

"I'm glad you think so," Mrs. Kagamine sighed. "Len insisted that everything was too extravagant. He said he didn't even want a birthday party, but I suppose that was to be expected. After all Len is turning 13, and entering his teenage years, and everyone knows those are never good."

Miku and I giggled at Mrs. Kagamine's joke, as I wondered why Len would not want a party as amazing as this. For my 13th birthday, I think I will ask Mother for a party similar to Len's. I will be turning 13 in only a few weeks too! Miku already turned 13 a few months ago, and her party was fun, but nowhere near the same as Len's.

"Why don't you girls wait in the kitchen, while I finishing preparing for the party?" Mrs. Kagamine suggested. "Kaito should be in there waiting too." Kaito was another one of our close friends, who was a bit older than Len and me. He was already 14, closer to Miku's age than anyone else's.

The two of us walked to the kitchen to find Kaito dressed up in a fancy suit, eating some ice cream from a small bowl.

"Hi Kaito," Miku smiled, her cheeks tinged a slight pink. I know that Miku has liked Kaito for a long time now, and I think Kaito likes her too.

"H-Hi Miku," Kaito stuttered, as he almost dropped his spoonful of ice cream. I laughed the two's awkwardness. Then I looked around the kitchen table for a small snack before the party started. Near the center of the table was a bowl with a card in front of it that read "For Rin Only!" Inside were lots of orange slices. Mrs. Kagamine knows me much too well. I grabbed a few slices and started to nibble on them as we waited for Len to come downstairs.

Needless to say, I was excited for the party. Being with Len was always a treat, but I also enjoyed talking with Mr. and Mrs. Kagamine's adult friends who also always attended Len's parties. They had such interesting stories to tell Miku and me.

Slowly, the kitchen started to fill up with people. Miku, Kaito, and I chatted with a few of them as we eagerly waited for Len to come downstairs. We had lots to tell him. Just yesterday, Kaito said he had gotten a new toy car, and Miku and I wanted to show him our new dresses.

We waited awhile longer, and soon Mr. Kagamine entered the kitchen to talk with the guests.

"Hello Mr. Kagamine!" the three of us said happily as we went to talk with him.

"Don't you three look nice today," he smiled. "Are you all enjoying yourselves?" We all nodded happily.

"But Len hasn't come downstairs yet," I told Mr. Kagamine. He frowned a bit. Mrs. Kagamine walked into the kitchen, holding a small pitcher of lemonade to fill the guests' cups.

"Dear, have you seen Len?" Mr. Kagamine asked.

"I thought he already came down," Mrs. Kagamine replied, setting down the pitcher on the table. I explained to her that the three of us had been waiting for Len, but there was no sign of him.

"Perhaps, he is just being a bit stubborn about having the party. I'll check on him," Mrs. Kagamine said.

"I'll come too," Mr. Kagamine added, just in case.

"May we come also?" Miku asked sweetly.

"I'm sure Len will want to come down, if he knows his friends are here," Mrs. Kagamine smiled. "And you all know the way to Len's room, I'm sure."

The three of us ran to the entrance hall and up the stairway that led to the second floor, with Kaito leading the way. We ran towards Len's room with Mr. and Mrs. Kagamine walking behind us laughing.

When we arrived, Kaito pushed open the door, and stepped inside.

"LEN!" he called into the bedroom, but there was no reply. We walked inside, and to our surprise no one was there.

"Did you find him?" Mrs. Kagamine asked, as she and her husband entered the room.

"He's not here," I told her, reporting our observations. Mrs. Kagamine's face turned pale.

"W-what?" she said. "He never left his bedroom though. I'm sure of it."

"Calm down," Mr. Kagamine said, patting his wife's shoulder. "I'm sure Len is somewhere in the house. He just didn't say where he was off too. You know how children are."

Mrs. Kagamine nodded, trying to reassure herself. I scanned the bedroom, looking for any hints as to where Len might have gone. Though knowing him, I would have guessed that he'd be in the kitchen eating a banana. I noticed a folded slip of paper lying on Len's bed.

I walked over to pick it up, and unfolded it. It looked like a letter in Len's messy handwriting. I read the letter carefully, before showing it to Mr. and Mrs. Kagamine.

I hate being fancy and proper all the time. I hate having to pretend to behave when we have company. I hate fancy parties, and I especially hate living here.

- Len

The letter was extremely vague (as expected from a 13-year old), but the point was gotten across. As I read the letter, small tears formed in my eyes.

"Mrs. Kagamine!" I cried, as I handed her the letter. She read it, with Mr. Kagamine reading it over her shoulder. In seconds, her eyes filled with tears.

"No!" she cried. "He couldn't have!"

"What is going on?" Miku whispered in my ear. Between my short sobs, I told Miku and Kaito what the letter said. Miku started to cry too, and Kaito's face was a white as a ghost's.

"We have to find him!" Mr. Kagamine yelled, as he headed downstairs. From upstairs, I could hear his resounding voice telling all the guests to search for Len immediately. I could hear footsteps run through the house and out the door. The voice of the guests screamed Len's name outside, looking for the lost boy.

Meanwhile, Miku, Mrs. Kagamine, and I sat crying with Kaito trying to comfort all of us.

"Someone will find him," Kaito said, trying to cheer us up, but to no avail. The tears I had would not stop, and I am sure that everything was worse for Mrs. Kagamine. Her only son had disappeared. One of my best friends gone.

Len, where did you go?

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