Filming began July 18, 2013 at amusement park "Yokohama Cosmoworld" in Kanagawa, Japan.
Based on manga series "L.DK" by Ayu Watanabe (published in Monthly Bessatsu Friend from March, 2009 to September, 2017).
Although both lead characters are depicted in the movie as the same age, actress Ayame Gouriki is actually 2 years older than actor Kento Yamazaki as she was born in 1992 and he was born in 1994.
Character Sanjo played by actor Ren Kiriyama was specially added to this movie though his character didn't exist in the manga version.