Unfortunately, I haven't seen the episode and can only make guesses at what happened.
So let's just wait patiently for Omniscient's summary.
And ooo... A Primula gif.
Spoiler:
Primula is teh cute !
Too bad she's hugging Rin. :x
[EDIT]
Oh wow, I just saw a clip of the ending credits.
The Primula + the 2 Kings scene was so darn funny!!
And OMG ! AMA in the credits looks uber kawaii !!! *Moe melt* >_<