Actually the seeming crotch folds for riku's pants look like some kind of map (normal, if i had to guess) feature over a geometrical model feature, along with the creases of his pockets on the outside. Not that you asked, and it does seem a bit off unless his belt is forcibly tightening his pants around the waist because it's too large for them (which might explain the jacket seeming like the shirt as well.) But without the actual model, can't really tell from that far back. 'Till later!
even with a normal map, the folds just shouldn’t fall that way because someone would have had to sculpt or model the fold to begin with before transferring it onto a lower polygon model. the folds falling downwards doesn’t make sense to me T_T;; like, the only way the folds will fall like that is if there are two seams running down that area of the pants, or if the front of the pants are stiff (hurrr stiff) and flat as hell.
So. yeah. Either the modelers totally glossed over how pants are made, or Riku’s fucking packing something weird.
Here’s a repainting demonstrating more accurate folds TuT;;; hopefully this helps people draw crotches? This bothers me way more than it should. Like, honestly, I want riku’s crotch to look good in HD LOL