This episode was all about Kyouko the dullahan. She faced many challenges from having a detached head, like bathing for example.
Hikari continues to be the mischievous driver of the plot, like arranging for Takahashi and Kyouko to go on a date without him knowing it.
Too much horseplay will usually end with minor pains. Like barking shins and stubbing toes. Play safely, girls.