A/N: Hello everyone! Here's another Vocaloid fanfic for you guys. This is my second Vocaloid fanfic(my first one's a two-shot, you guys can go check it out if you want) and the first one that will be a multi-chap. This idea came into my mind when I watched a couple of scenes of the anime Diabolik Lovers. Honestly, I don't like the anime itself but I do like the concept. And I figured I should try writing something with the same theme but with Vocaloid characters. Also, as opposed to Diabolik Lovers, it's the male character that will have a harem and not the female one. Anyways, please read and review, let me know your thoughts/comments, basically feedback. I'll update faster if you guys take a liking into this one. Happy reading!

A young blond boy stood outside a large, brown mansion. He turned his gaze upwards, observing the cozy-looking abode in awe. The place was huge! This house must have at least four floors, judging from the windows. The walls were painted in plain brown and the roof patterns were painted in black. There were plenty of windows with white frames, but most of them were covered by black curtains. This house seriously looked like it was straight out of a fairytale. Really, who would be willing to spend so much money on a house like this?

The boy pulled out his phone and read his mother's text message again. The address she sent him matched the exact address of this mansion. The blond felt that something was off. He went online and checked his location. Again, his location was a match—he was in the right place and in the exact location of the address.

He pocketed his phone and sighed. He took another look at the gigantic mansion. He and his mom were moving here? He certainly didn't expect this. Sure, his mother had been getting a lot of promotions and bonuses lately, but he didn't expect that she was able to earn enough money to move into a large mansion like this one. To come think of it, she didn't even notify him prior today that they were moving. She just sent him a text message earlier this morning that they were moving along with the address of their new residence. She also told him that she was going to come here after work. Other than that, he wasn't notified at all.

He was also told to ask for the caretaker to let him in. The boy shrugged his shoulders and rang the white doorbell beside the front door. He sincerely hoped this caretaker was friendly. He didn't really want to have an asshole of housekeeper. A few minutes passed and there was still no response. He rang the doorbell again and began to tap his foot impatiently on the floor. He did this three more times.

After ringing the doorbell for the fifth time, he sighed. Some caretaker they had. How was he going to enter the mansion now? His gaze landed on the gold doorknob. Hesitantly, he reached for the shiny knob and clasped his hand around it. Slowly, he twisted it, hoping to open the door.

It worked; the large door opened before him. He scoffed at the bittersweet result. It was good that he was able to enter the house, but he wasn't too sure what to feel about the house being unlocked. Now he wonders why his mom didn't just give him a key…

He entered the large mansion with his luggage in tow. When he stepped inside, he looked around. The interior of the mansion was as spacious as its exterior hinted it to be. He smiled. He could already tell that he was going to enjoy living in this place. He gently closed the door behind him and walked forward. The walls were also painted in brown. There were a lot of paintings scattered around, some of beautiful landscapes and some of what he guessed were famous painters during the Renaissance. The place was absolutely beautiful. His smile grew at the thought.

He stopped in a large foyer area. In front of him were two pairs of stairs—one on the right and one on the left. Both led to a second floor area, where there appeared to be about seven rooms—one directly in front of the top of the stairs, three on the right and three on the left. He furrowed his eyebrows. He didn't see the point in having so many rooms when it was just himself and his mom who were going to live here. There were two hallways, one on his left and one on his right, leading to who knows where.

"Hello, anyone home?" he asked out loud. His voice echoed loudly across the halls and around the area, but he didn't receive a response. He walked forward in an attempt to be heard more clearly then spoke. "I'm Kagamine, Len Kagamine. My mom and I were supposed to move here today. Anyone here?" he spoke louder.

He was again met with silence. He shook his head. This is weird. There was supposed to be a caretaker here. When he turned his gaze to the direction of the hall on his right, he saw something that caught his attention.

There was a purple couch not too far from him and what looked like strands of teal…hair? He suddenly became wary. As cautiously quietly as he could, he approached the couch. He made sure that his footsteps made no sound at all. As he approached the piece of furniture, he got a better look—there was definitely someone lounging on that couch. Perhaps it was the caretaker?

He stopped in front of the couch. Needless to say, he was quite surprised now that he was able to see the sleeping person clearly. The person was a girl who looked around his age. She had long, teal hair that extended past her waist. She had pale, flawless skin which upon seeing made his fingers twitch. Her heart-shaped face was adorned with long eyelashes, thick black eyebrows, perfectly shaped cheeks, a cutely defined nose and luscious, plush lips. She was wearing a black tank top and a pair of white short shorts. She had a nice figure, indicating that she most likely works out. She had nice, long legs as well.

This girl was absolutely, breath-takingly and unbelievably beautiful. She looked like an angel, as cliché as it sounds. He had never seen such a beautiful human being. He felt his cheeks warm up. Damn, this girl was a real hottie…

He slapped himself. He shouldn't be having such immoral thoughts. After getting a grip, he decided to wake her up. Maybe she was the caretaker his mom was talking about.

"Excuse me, miss" he began softly. As much as he wanted to wake her up, it would be rude to just shout at her. "Miss, pardon me" he repeated. A few more tries later, she wasn't waking up. He sighed. He had no choice then…

He reached a hand out to shake her awake. But when his fingers made contact with her shoulder, he gasped. She felt so cold. He touched the sleeping girl's forehead with the back of his hand to check her temperature, trying to ignore how heavenly it felt to graze her skin with his own. She was really cold…too cold. In fact, she was cold enough to not be alive.

He felt panic rise up in him. What if this girl was…dead?

Unable to stomach the thought, he quickly pulled out his phone and dialed the number of the local ambulance. "Don't worry, I'll get help" he whispered shakily as he typed the numbers on his phone in panic. This can't be happening. There was no way a dead girl would be in this place. Was that why the doors were unlocked, because someone had already been here?

Before he could type in the last digit, he felt something enclose his wrist. His eyes widened. He slowly brought his gaze upwards to see what was holding him. It turned out to be...a hand. The fear within him increased. Slowly, with his gaze, he traced the owner of the hand.

It was the girl sleeping on the couch a few moments ago. He froze. Now, the girl was wide-awake, staring right into his eyes with her hypnotizing, forest-green eyes. He was nervous, but at the same time, he found himself incapable of human thought because this beautiful girl was looking at him. The girl just continued to stare blankly at him. So…what should he do?

Before he could answer his own question, he found himself pinned to the nearby wall and a sharp elbow right on his throat. He groaned in pain. The elbow on his throat was preventing him from breathing properly, causing him to choke uncontrollably. When he opened his eyes, he saw the teal-haired girl, her face a few inches away from him. Her face remained stoic but her eyes shone in pure anger. He was sure his cheeks were red at this point and he wasn't sure if it was because of the lack of his air supply or because he was so close to this beautiful girl.

"Who are you?" the girl asked him, now gritting her pearl-white teeth. She pressed her elbow down his throat further, causing him to struggle helplessly.

"I'm K-Kagamin-e. I-I'm supposed to m-move here t-to-today" he choked out.

After he spoke, the girl removed her elbow from the boy's throat. The boy heaved in relief, glad that he was able to breath normally again. He shook his head and calmed himself down. Once his sight cleared again, his blush returned.

The girl who was previously choking him was now trapping him. Her right hand was resting on the wall beside his cheek while her left hand was resting on his shoulder. She gazed into his eyes with her own half-lidded ones. "Who are you?" she repeated, but this time in a low whisper.

The boy gulped. "I-I'm Kagamine. I'm supposed to move here today" he parroted.

The girl smiled seductively at him. "Kagamine, hm?" she trailed as she brought the hand that was resting on his shoulder up to his hair to brush his blond locks. Len groaned in pleasure. 'More, touch me more' a voice inside Len whispered as the girl ran her hands through his hair.

The girl was quite amused at the effect she had on the boy. She brought her face to his neck and sniffed. She let out a silent moan upon capturing Len's scent. "You smell good" she whispered.

Len was panting. This girl was too close. Yet, he didn't want her to move away. Ever. He just wanted her to melt into him. He wanted to reach out to this girl and lock her in his arms. He didn't care even if this was so uncharacteristic of him. Something within him just wanted this girl.

His heartbeat stopped when her gaze returned to meet his own. Forest-green clashed with ocean-blue. Time stopped for Len. He couldn't take it anymore. He needed to do something.

The girl's smile widened. Before another second passed, the girl leaned in and captured Len's lips in a passionate kiss.

Len lost control of himself. He responded to the girl's kiss eagerly. He had kissed a few girls before, but this kiss was different. He found himself addicted to this girl, to her scent, the texture of her lips and her soft skin. He felt her tongue probe at his lips, seeking entrance to his mouth. Without hesitation, he opened his mouth and drowned into sweet ecstasy.

As the kiss went on, Len felt himself grow weaker. But for some reason, he didn't pull away. He couldn't pull away. He wouldn't pull away even if he could.

He was trapped and there was no way out.

A/N: That's it for chapter one! I hope you guys enjoyed. Sorry if the fluff part seemed kinda rushed, but I promise you there will be a lot more of these rated T scenes for Len(lucky bastard). In the next chapter, Len discovers more about the truth regarding why he was sent to the mansion and et cetera. Please leave a review or a PM for your feedback, I truly appreciate it and it keeps me going. Thank you for reading and have a nice day!