A Little Louder For The Back

Ryuji Sakamoto has a nasty tendency to blurt out the exploits of the Phantom Thieves within earshot, something that has both gotten the group in trouble and has been a running gag for him in the games and fandom. In one scene, RTGame, a Lets Player who is streaming the Royal version, brings extra detail to a character in the background who is suspiciously more detailed than the other students who is well within range of Ryuji's latest ramblings.

Example of:
The Law of Conservation of Detail