Please please please please PLEASE don't immediately call out Light Yagami for being Kira the milisecond you see him or give L proof that Light is Kira when they just got introduced,   
  
 it hasn't happened yet but for some reason i'm super paranoid about somebody Metagaming and just having their character instantly figure Light out ((To explain what Metagaming is: it's when a player/roleplayer uses outside knowledge that their character does not possess to influence in-game actions so like for example uhhhhh...Big The Cat instantly figures out Light is Kira even though they literally just met))   
  
  
Its fine if your character can read minds and understand Light's true intentions but if thats the case please don't reveal it to other characters or jump Light for it have the character pretend to play along or maybe coax him into doing less harm (even though it wont work since he's a narcissist) its better than trying to kill him since he's literally a normal mortal human. If they can read minds or read souls or whateve rand instantly know Light is Kira have them be a neutral party/observer like Ryuk so it doesn't ruin the suspense for other people's characters.  
  
Yes everyone outside of rp knows Light is Kira but characters in rp don't. It's just something I want to clarify, theres no good suspense if a random person instantly jumps Light when they have no clue he's the killer.

Since I introduced L and Light Yagami I want to say something real quick