To be honest we may well get more story than expected next episode. It looks like they're condensing the nozomi rescue, Guizhang fight and 70 man battle into one big sequence, but surely that won't take a full 23 minutes. It may well be that there is a bit of pay off with Mark (maybe a new twist?), possibly a shorter cameo of Shozo towards the end, and even Tom teaching Ryo Tornado kick, as this happens right at the end of S1 as well if I'm remembering correctly. That said, as Tom has only had a tiny cameo so far I'm not too confident in that, but fingers crossed. I could have sworn when Goro gave Ryo the coffee that was going to lead to Ryo giving that to Shozo Mizuki as well, so I'm still hoping they squeeze him in somehow.