Mirror
Every morning Souji wakes up, throws off his clothes and takes a hot shower. When he steps out from the stall, dripping onto the floor like he's melting, he looks into the mirror and sees himself amongst the steam and the humidity that looks suspiciously like fog, and he stares at his reflection until it smirks back at him, eyes glowing yellow as it begins telling him awful things. It mentions how big a pussy Yosuke can be, always whining for Saki Konishi, as if he couldn't be any lamer than he already is. It says Chie's so clingy and dependant, pathetic and lost. It claims Yukiko is so dumb for liking him so easily, how Rise seems so fake, despite how she tries not to be, and how Kanji needs to grow some balls when it comes to the dumbest things, while Naoto needs to get that stick out from her flat little butt. Shadow Souji wants real Souji to know that he thinks they're better than all those dumbass friends of his, and that they're so easily infatuated with someone like him, the mysterious and charming city boy. And Shadow Souji wonders how much they'd give for their leader, and then laughs as he screams that they'd "give their worthless, shitty lives for me!" He snickers, waiting for the real Souji to react.
But Shadow Souji is at a disadvantage, because none of these things are anything Souji himself hasn't thought at some point, no matter how much he regrets it. Those thoughts were there at some point, and he won't bother denying it. So instead he smiles at his reflection, warm and accepting.
"Good morning to you too, Souji-san," he says to the reflection in the mirror, as if it were a roommate he happened to share bathroom time with. The Shadow says nothing in response, it's eyes glinting in the familiar gold tinge as he goes about his business and leaves, making sure to leave any doubts behind with that other self.
Shadow Souji glowers at the door where the real one has disappeared, and waits for night to fall, so he might remind his other self of his inner demons as he brushes his teeth.