[RustyBrooks]

I think villain pretty clearly has a bad hand. You're showing the same board as him up until 5th. If he's as aggressive as you say, and he had a 4 card low on 4th, he'd probably raise. If he had a 5 card low on 5th, he'd probably raise. The fact that he did not raise these spots and folded the river makes me think he paired and had something like A7 or 47 in the hole. Good enough to draw but not good enough to raise you (his cards are, after all quite life, you're often FOS here (not you in particular, just razz players) and a lot of the time that you have a made hand it's an 8 or a bad 7)

The problem is, can you get him to bet, and if you raise, will he call? It's often difficult to predict and razz is a tough game to get people to bet for you, esp with boards like yours. If you check and it checks through you might get improved action on 6th and 7th though, although here it would look like you got lucky and "made your 8" anyway. (In case it isn't clear, yeah, 5th is the ideal place to check - he probably has a good draw and might bet it if he thinks he's ahead. Most people know those same draws are dogs to even bad made hands on 6th and there are lots of cards that will kill your action)

You got a little unlucky is all. Ideally he'd have made a hand on 6th, thinking he sucked out on you, and went to town.