A/N: This is a little short story of my OC, Minori (From Diabolik Lovers: The Twin Brides fanfic) and Ayato. Lot of people were asking me to do one-shots, of what if she was with this person instead. So here you go to the people who have been craving for Ayato x Minori!

Rating: T for now, but later on M.

Disclaimer: I don't own Diabolik Lovers, or its characters. I only own my OCs.

ღ Obsession ღ

-Chapter 1-

"Piss off you tomato-head freak!"

Ayato's left eyebrow twitch as he remember his and that girl's argument earlier. If it wasn't for Reiji intervening, telling to stop their childish nonsense, he would have taught that mortal girl a lesson. He don't know what is with her deal with him. Why can't she be more like her older twin, Yui. She don't deny him, nor argues with him 24/7.

He grits his teeth. It's starting to tick him off now. Ever since the first day he met the younger twin of the Komori sisters, she's been giving him hell. Telling him he ain't no boss of her or Yui. He should go die in the hole. He's not all that. It's stupid he calls himself Yours Truly. The list goes on, and on.

Don't get him wrong, he doesn't hate the tom-boy twin. In fact he sort of respect her a little bit. She has a lot of guts to stand up to him, and his brothers. Even though she has learned they are vampires, but she continues to resist, and refuse to be their food. She wasn't willing to give up, but continue to hold onto that hope of escaping from them. All this for her sister. Never had he met someone who would do anything to keep their sibling safe. Human like that is hard find.

Despite his respect, he dislikes her mostly. When he first drank from them, he drank from Yui. That earned a hard slap from Minori. Ever since that day, their relationship became nothing, but dislike towards each other. Of course she dislike Kanato, and Laito more than him, but she still dislikes him nonetheless. Ayato remember he tried to drink from her, but that earned a kick to the gut, and a slap to the face. If it wasn't Reiji then, he would have taught her lesson to hit Yours Truly.

Whatever her deal is with him. It's going to end now. He's tired of it. She thinks she can treat him this way, think again. He's going to show her who's the boss.

The very thought cause him to chuckle darkly.

Ayato patiently waited for Minori to walk down the hallway. He could sense her presence coming, considering her and Yui have almost the exact same smell. It makes me wonder if their blood truly does taste the same. Perhaps he could test that theory.

"Oi." He said.

Her short, boyish hair was messy, look like she just woke up or something. She was still wearing the school's uniform. Minori payed no attention to him, but kept walking down the hallway. Like he was never there. She always treat him like he don't even exist. It angers him, and cause a blow to his ego. No one ignores Yours Truly. Especially not some mortal girl.

"Oi!" He grabs her arm before she could pass him in the hallway. She turns to glare up at him, with those rebellious eyes that match his own. Laito once commented that they're alike in way, and he refuse to believe it to this very day. That he and this girl are the same.

"What? Clearly I'm not in the mood to talk to you." She sneered at him. It's true that she don't look like she's in the mood, but what does he care.

He frowns at her. "Shut up, Girly Boy. It don't give you the right to be a smart ass at me." Ayato said. "I'm hungry so-"

Minori rolled her eyes. "As if I'll let you feed from me." She jerked her arm from him and continue to walk down the hallway.

He glares at her, standing there as he trying to sense if Reiji or Subaru is nearby, the only two that will stop him. Ayato smiles as he only sense it's just them. It's a perfect time to drink from her. He always wanted to taste her blood, and now is the perfect opportunity. This time they will not be interrupted by his brothers.

He followed Minori silently, and as soon as he caught up to her. Ayato grabbed her shoulders and slammed her against the wall near her bedroom door. He quickly grabs her hands and pins them above her head with one of his hands before she could punch away at him. He grips them tightly so she won't escape from him. He ready his other hand for kick to come like she always does whenever they're like this.

Minori glared up at him with full of dislike. "Let me go tomato-head!" She tried to kick him, but it was futile as he easily deflected it with his other hand. "Let me go or-"

"Or what? Reiji will stop me? Guess what? He's not coming since it's just only us two at the moment, and I intended to teach you the lesson I've been waiting for so long." Ayato said as he smile sadistically when he felt her tremble slightly. He knew behind all that talk, she was nothing, but scared mortal. All humans were. "You've been defying Yours Truly for so long, and you shall be punish."

Minori scoffed. "What are you going to do? Drink from me?"

His smile widen even more. "I intended to." He laugh at her shock expression. Her face is so priceless. "Why are you shock? You should have known this was coming. I was going to drink your blood some day, and it's now."

Minori shook her head, and he watch her eyes filled with defiance. "I won't let you!" She spat. She began struggling in his arms, and he smiled at her feeble attempt. It was so fun watching her struggle, but the idea of drinking her blood finally excites him.

He leans down as he felt her struggle even more. Getting excited by the minute, he pierce into her neck. Her blood pour into his mouth as she gasped out in pain from his sudden roughness. It was her fault to struggle against him. Ayato close his eyes, as her sweet blood pours down his parch throat. It does taste Yui's, but... something about it taste more sweet... like he wants to drink more, and more until their isn't nothing left.

Ayato pulled away and laughs. "Amazing, it taste so good that I want to drink all of it." He said excitedly.

"I... won't let you!" Minori kneed him in the gut, catching him off guard. He leans forward in pain, causing his hold her to loosen. Minori pulled her hands away from him, and ran down the hallway.

Ayato glared down where she ran. He hates it how she continue to disobey him. Why doesn't she listen to him? Why not just give in, and obey him?

He ran after, only to be caught up to her in minutes. He wrapped his arms behind her, making it harder for her to escape. Without even hesitating, he pierce his fangs into her neck again. This time much force which cause the poor girl to howl out in pain.

"Let me go!" Minori struggle, but he tighten his hold, and drank more from her. It angers him so much. Why does she continue to anger him? She will submit to him. She will, otherwise he will make her. She will heed his every command.

Her struggle dies down within a minute as whimpers escape from her lips. He continue to drink hungrily from her, and slowly withdrew himself as he felt her slowly going off into unconsciousness. He never drank so much blood before. especially not from Yui. Why this girl...

Ayato's green eyes narrowed. He whispers to her ear. "I may not be the first to bite you, but I will be your first in everything. Yours Truly, will take your every first experience." He promised her that much. The sudden idea of his brothers having her, disgusts him. She belongs him, and only him.

Minori didn't say anything until she close her eyes, and let the darkness welcome her.

It was a few hours later when she awoke, only to find herself in her bedroom. The mortal girl look around confused, and remember what happened earlier. Her hands flew to the new fang marks on her neck, remembering who created those.

She groaned in irritation. "That guy... The nerve of him to do that!" She yells out.

"I can do what I want, and whenever I want."

Minori turned and glared to see Ayato sitting at the edge of her bed. He was smiling at her angry expression. She knew he's enjoying this. What a bastard.

"Just go away!" She yelled at him as she swung a fist at him only to be caught within a second. She expected him to twist her hand to break it or to bite her, but to her surprise. He pulled her into a kiss. It cause her eyes to widen in shock, but it didn't last long when he pulled away a second later. Smiling evilly at the work he just now done. She felt her face flushed red, because that was her first kiss, and the person she dislike has taken it. "B-Bastard!"

Ayato laughed as he gets up and walks over to the door. He looks back at her with a smirk. "I said I will be your first in everything, and I intend to be, Girly Boy."

What he said wasn't something he was going to do, it was promise. He intended to take her first in everything from her. The very idea sounds so appealing to him. It was a good punishment for her for making him look like a fool. Now it's his turn for her to look like a fool.

Though he's unaware this is all slowly becoming an obsession.

An obsession that would soon cause an unlikely pairing.

A/N: I hope I didn't make Ayato too OOC. I tried not to ;A; This is an Ayato x Minori story. She will not be with any other in this one. This is a short story, but I hope you enjoy the beginning of it. Please review:)