You were the friend of all three. You also helped out on the Kira case, It was boring and all but you did your best to help out.

Right now L is sitting in a chair in the crouching kind of way. Near is playing with toys on the ground. Mello is sitting in the chair eating chocolate

Mello looked at you weirdly and asked a question

Mello: What's wrong with you? Near: Looks at Mello then you noticing something is wrong L: Still sitting in a chair now eating sweets