You nervously walk up to the front door and knock on it. A kind-looking woman answered it, smiling at you.
"Hello, Mrs. Yagami?" you ask.
"Yes, that's me. Can I help you?" she asks.
"I'm a friend of your son, Light's, from school." you say. "I-Is he home?"
"Yes, he's here. Would you like to go up and see him?" She seems delighted to see a girl coming to see Light.
"Oh, please, if it's not any trouble." You're really, really nervous.
"Of course it isn't, dear! I'll tell him you're here." She opens the door wider so you can come inside.
"I was hoping that I could surprise him, if it's okay."
"Alright! He's in his room. He probably has the door locked since he likes to study, so just knock and tell him I sent you up." she instructs. You nod eagerly and head upstairs, trying not to rush. You stand in front of the door his mother indicated, and just stare at it. You're so nervous, you're contemplating going back downstairs and leaving without a word.
"No. That would be cowardly and I'd never accomplish anything that way." you whisper firmly to yourself. You gather your courage and knock lightly on the door.
"Mother, I already told you, I don't need anything. I'm fine." Light says from inside. You smile for no reason.
"Um, Light? Your mother sent me up. I really need to speak with you." you say, making your voice clear and eliminating all traces of unease. You hear nothing for a couple seconds, and then the lock clicks and the door opens. Light is standing there, staring at you with no expression at all on his face.
"Uh, please, come in." he says. You enter his room and he closes the door, locking it again. "May I ask you your name?"
"I'm sorry this is so sudden. I know you don't know me and all, but it's important. My name is (y/n)." you explain.
"It's nice to meet you. I don't mean to sound rude, but can you please explain why you're here?" he asks.
"Yes, of course. I just hope you won't get mad at me for knowing too much!"
"What do you mean?"
"Well, I don't know how to explain it, but I know things." You lower your voice a little. "I know that you're Kira." His eyes widen in shock as you say those words. "I know that there is a Shinigami standing right over there." You point to where the death god is standing. "And I think that what you're doing, making a better world, is absolutely wonderful!" You drop down onto your knees. "Light Yagami, I pledge my everlasting trust and support to you." You lower your head, waiting for a response from him. He's silent for a little while. You assume it's mostly because of shock.
"Get up." he says finally. You quickly do as he says. You look up at him as he walks towards you slowly. "Since you know that I am Kira, you have to prove your trust and support to me, or else I'll have to kill you."
"Anything. Anything you want, name it and I'll do it." you say firmly.
"I want you to do the one thing every girl is reluctant to ever do before marriage because their families would shame them. I want you. . . to give yourself to me." he says.
"W-What do you mean?" you ask, even though you already have a pretty good idea of what he means.
"I think you know." he says. He runs his hand up your bare thigh, lifting your dress up until his hand is resting on your bare hip. His face is hovering about an inch away from yours. You answer simply by closing the gap and pressing your lips against his. He smirks into the kiss and plunges his tongue into your mouth. You open your mouth a little so that you can let him massage his tongue with yours. He grabs your hips and pulls you closer to him, your waists grinding together. He slowly inches backwards, pulling you with him, until he flops down onto the bed, you landing on top of him. You break away and sit up a little bit.
"Um, isn't it gonna be kinda awkward with him here the whole time?" you ask, jerking your head to the side to indicate the Shinigami.
"Oh. Right. Disappear for a little while. Go take a walk or something." he tells the death god. The Shinigami groans and reluctantly does as he says. After he's gone, Light cups your face and brings it back down to his. You loosen his tie and unbutton his shirt. You both sit up so he can take them off. Then he helps you pull your shirt over your head and then he undoes your bra. You let him take it off and toss it on the floor. You unbuckle his belt and toss it down too. He then kicks off his pants and helps you with yours. He pulls down the blankets on his bed and you both slide in. While completely covered, you remove your underwear and drop them on the floor. He does the same with his boxers. In a flash, he's on top of you, in between your legs. He waits for about a second, and then pushed inside you. You whimper at the pain, and squeeze your eyes shut. He goes slow, until the pain subsides and turns into a new feeling, a good feeling. You wrap your arms around his neck, bringing his face close to yours. You press your lips to his again, over and over. He then starts moving faster. Your whimpers cease and turn into quiet moans. They would be louder, but you don't want to call attention upstairs, since his mother is on the floor below. With a final thrust, he tenses up and collapses onto you. He rolls to the side and pulls you close.
"I didn't think you'd actually do it." he says with a smirk. "But I'm glad that you did, because now I have no doubt that you meant what you said earlier."
"I did, Light. And I still do." you say. He sighs and buries he face into the crook of your neck.