The difference teeth can make! He looks like a teenager now!
Anime Style: Spot The Difference 🏮😲😤😰😥😤😲🏮
I agree with the teeth. I also think it's because his overall appearance is larger...like, for example, his shoulders are broader looking. Or, because of the way his face sits in the second one, it looks more spread out and not so "baby face" and small.