You were Misa Amane’s friend the Girlfriend of light Yagami. One day She brought you to the headquarters to Meet light but she totally forgot about the Kira investigation, you knew she was the second Kira but you didn’t know Light was Kira, Light & Misa were pretending to try catch Kira, While L the lead of the investigation wasn’t acting. When she brought you there she said out loud infront of everyone

Misa: ”Hello everyone!! I brought my friend her name is—“

Light: ”Misa what are you doing?! You’re not supposed to bring anyone here!!”

L: L his his face , no one except for the police Light and Misa had seen his face ”Misa!! No ones supposed to see m—“

He takes a peek at you and blushes slowly, he uncovers his face