Hehehe, enlightment in a comedy series.I mean it was beach episode, but it showcased Izumi's true nature as a SM queen (thanks to that blonde foreigner)?!
I guess the producers wanted to give Izumi the dominating power she yearned for the past couple episodes. It can also represent whether it's alright to leave everything in its sitcom comedic fashon and have "fun", or break away from it and gain independence.
