Teruko is a 28-year-old office worker. 5 months ago, she fell in love with Mamoru at first sight. Since that time, she has not cared about her work or her friends. She then loses her job and her friends look at her coldly. Yet, Teruko is happy as long as she is with Mamoru. Meanwhile, Mamoru thinks Teruko is an easy woman for him to not love. Teruko's unrequited love grows deeper.
Is What Is Love? on Netflix? Unfortunately the movie What Is Love? is not yet available on Netflix.
| Editing | Takashi Sato | Editor |
| Directing | Rikiya Imaizumi | Director |
| Writing | Mitsuyo Kakuta | Novel |
| Production | Ryô Murata | Producer |
| Production | Hiroshi Niimura | Producer |
| Writing | Rikiya Imaizumi | Screenplay |
| Writing | Kaori Sawai | Screenplay |
| Camera | Hiroshi Iwanaga | Director of Photography |
| Production | Minori Maehara | Producer |
| Production | Kwang-gi Song | Producer |
| Production | Koichiro Fukushima | Producer |
| Sound | Gary Ashiya | Original Music Composer |
| Production | Yasuhiko Hattori | Associate Producer |
| Directing | Ryuji Yagami | Assistant Director |
| Art | Yukihisa Satosu | Production Design |
| Art | Utena Masataka | Decorator |
| Lighting | Daiki Katô | Gaffer |
