Who is the traitor in Persona 5?

Can you enlighten me on the mystery surrounding the traitor in Persona 5? Is it a character we've grown to trust throughout the game, or someone who's been lurking in the shadows all along? How does their betrayal unfold, and what motivates them to take such a drastic step? Are there any clues or hints scattered throughout the story that, upon closer inspection, point towards their true colors? I'm eager to uncover the truth behind this enigmatic traitor and understand their motivations.