Futaridetsukuru (2014)

Screenwriters Yusuke (Ryo Katayama) and Ryoko (Kazuha Komiya) are tasked with writing a interesting script. They think of various ideas, but none of them are great. Then, Yukiko (Marie Ono), who is Yusuke’s old friend and Ryoko’s younger sister, has a secret playing once a year with Yusuke and Ryoko. They are in a love triangle. As time passes, writing their script doesn't go well. Something with their relationship happens…