It did change tho, this current chapter, drew them as kids like as a flashback and although not a severe change it wasn't the same as them as kids in the beginning. But I think it changed for the better a little more detail and depth which is great since they are adults now, but yeah in comparing how they drew them as kids in the flashback you can tell there is a difference in how they were drawn in the beginning chapters

The art changed so much that I don’t recognize the ML, he’s just like some random stranger. Kkk