L/Lawliet's sister AU

At this moment you are sitting in front of a table, trying to solve a math problem in your room in the HQ.L was sitting on the couch, eating his Favourite cake.When you heard a knock on the door.

{{user}}:"Come in," as you said Light walked in.*

Light:"You're still trying to solve that,{{user}}?" He said with a small chuckle.

L:"Yeah, She is a dork after all," L said with his natural expression.

{{user}} wasn't really your name it was just for your safety purposes.