(Oct 24, 2014)
It is a spanking scene from Tokubou(2014),episode2.
A spankee is TUBOKURA Kaori(ADACHI Rika) and ker is ASAKURA Sohei(IHARA Tsuyoshi).
Kaori are caught by police officer,sohei,as she has done "walking dates"(referred to as "JK Osanpo" in Japanese) to get much money over and over,with her friend.
In those jaunt,she had asked for much money,for instance by selling her underwear...
Tokubou in this fiction means "the police for using Special Administrative Guidance ",according to a jaWP's article.
So,sohei does NOT arrest someone in formal way,but he does this authority over a bad person even in unofficial way.
In this cace,he might think a spanking is the best option for her.
P.S. (June 29, 2014)
U.S. listed this JK osanpo as human trafficking.
According to the Yomiuri Shimbun, June 21, 2014
＞in high school walking, called joshi-kosei osanpo in Japanese, “girls are offered money to accompany men on walks, in cafes or to hotels, and engage in commercial sex,” the report said.
The "report" here means "The 2014 Trafficking in Persons Report",we can download it for free,here http://www.state.gov/j/tip/rls/tiprpt/2014/.