Ren

I think it's important to remember that Adrien hasn't found himself yet. I mean, he's growing, yes. But what part of him is actually free at THIS point? This style change is more about his grief over his relationship with Marinette. Everything about his look reflects that: the hair resembling Tryonix, which was the time they were both superheroes without having to hide their identities, and the sweater inspired by his baby clothes, which Marinette had told him she wanted to make a modern version of. The truly tragic thing about this is that Adrien left behind the style his father had molded him into, only to fall into a style that Marinette also molded him into, directly or indirectly. That's why I'm convinced this change isn't definitive. He'll only be free once he knows, accepts and understands the whole truth, including all the times his beliefs and feelings were manipulated, first by his father, and then by Marinette. This kind of revelation makes me sad because Adrien still has such a long way to go, and he needs to walk that path ALONE. That's a pretty difficult thing for someone who has spent most of his life being alone, at least emotionally and psychologically #MLBS7Spoilers