Director Nobuo Mizuta and screenwriter Kankuro Kudo have previously worked together in 2007 film "Maiko haaaan!!!" and 2009 film "No More Cry!!!"
Yutori education is a Japanese education policy that begin in the late 1970's. The policy reduced the hours and the curriculum in primary schools in hopes of having a stress-free environment. Opponents to the policy believe it may weaken the competitive sense and ambitions of students.