Thank you @Clareneko for this request!

~Lia

Your parents had been good friends with the Yagami's since long before you were born. So, naturally, you and your younger sibling were good friends with Light and Sayu. Your parents would go over to their house every Friday night, and of course they brought you and your sibling.

You smile happily from your spot in the back seat as your father turns the car into the Yagami's driveway. As soon as your father unlocks the doors, you and your sibling exit the car and run up the front steps of the Yagami's house. You excitedly jab your finger into the doorbell button.

Mrs. Yagami opens the door, a smile on her face, "hi Y/N, S/N. Light and Sayu are in the living room," she said, knowing that the two of you would be looking for them

"Thank you!" You exclaim happily, running past her, your sibling in tow. You rush in to see Light and Sayu sitting on the floor around the coffee table. Every week you would play a different board game with them. You sit down by the coffee table and look at the board game.

"Clue?" You ask, raising one eyebrow and looking at Sayu.

"I tried to get him to play a different game, but I lost rock, paper, scissors," she says, frowning slightly.

"But Light always wins Clue," S/N whines. While this is true, you've always been an overly competitive child, and this was no exception.

"He's not going to win this time," you state confidently, crossing your arms

"Oh really?" Light asks, an expression of amusement present on his face

"Yeah, really!" You answer, picking up your cards, which Sayu was dealing while you spoke.

"If you're so confident, why don't we add a little competition?" He suggests, picking up his cards as well

"Sure. What does the winner get?" You ask while marking off the cards that you had in your hand

"The others will have to do whatever he or she says," he answers, folding his paper in half so nobody can see it.

S/N and Sayu share a nervous glance, neither very confident against Light.

After about a half an hour, S/N is out of the game because she incorrectly named the murderer, weapon, and room.

"I accuse Mrs. Peacock in the hall with the rope," Sayu says, picking up the black folder in the middle of the board. She looks at the cards and sighs, shoving them back in and tossing the folder back on the board in defeat.

"Welcome to the losers circle," S/N says and smiles as Sayu crosses her arms and leans against the couch.

"This game is stupid," she mumbles, but smiles at your siblings comment.

You bite your bottom lip. You only need one more piece of information before you can confidently make an accusation, but you don't know how much information Light needs. 

He rolls the dice, moves his piece, and looks at you confidently, "I accuse Mrs. Peacock in the hall with the candlestick," he says, grabbing the black folder from the middle of the board.

Your heart pounds as he opens the folder, then smiles and throws it onto the board, open, revealing that he was correct.

"Ugh, what do we have to do?" Sayu asks, sighing heavily.

"Sayu, S/N, please leave the room," Light says. They give each other confused looks, but stand and leave the room as told.

"Y/N, please close your eyes," he says, beginning to stand. You timidly close your eyes, no idea what he's planning. You hear him move closer to you, then, only for a second, you feel soft lips on yours.

Your eyes spring open, only to be met with the smiling face of Light.

"Oh my goodness!" You hear Sayu squeal from a doorway out of your field of vision.

"Your brother kissed Y/N!" S/N laughs wildly, making your cheeks get increasingly warmer.

The two run back into the room and reclaim their spots around the coffee table. 

"Are we playing again?" S/N asks, Light nods.

"Same bet?" Sayu asks, smiling deviously.

You smirk and answer confidently, "Absolutely,"