Episode 4 is sweet. Siesta just became my favourite girl in this series (well, there aren't much to choose from between Zero Louise and SuperBust). That mustache guy is just sick, and sadly it does happen, buying women to satisfy their own treacheous desires. Saito, even though they are just acquintances is very considerate to risk himself to save her. Siesta might misunderstood something here though... but earth to Saito, there is absolutely nothing bad about Siesta. Damn, she is probably the sweestest girl he has met. Go for it!
Saito and Siesta makes a very cute couple, probably the best match in the series.