Nita, a dog that lives in Sunshine Academy's student dormitory, brings home with him a puppy that suspiciously looks like him—this sends everyone into an uproar as it is eventually concluded that Nita likely had a puppy with somebody else. Elle, Shunsuke, and the others collaborate with one another to take care of it, but a delinquent biker boy named Takizawa uses this opportunity to trick Elle into joining him on his yacht for nefarious purposes. Shunsuke & the others, having realized this, rush in to save Elle from Takizawa before it's too late.
Unfortunately the movie The Kabocha Wine: Nita no Aijou Monogatari is not yet available on HBO Max.
| Writing | Shun'ichi Yukimuro | Screenplay |
| Visual Effects | Kiyoshi Matsumoto | Animation Director |
| Sound | Hideyuki Tanaka | Recording Supervision |
| Directing | Kimio Yabuki | Director |
| Sound | Osamu Shooji | Original Music Composer |
| Production | Chiaki Imada | Producer |
| Sound | Michihiro Itou | Sound Effects |
| Writing | Mitsuru Miura | Comic Book |
| Editing | Yasuhiro Yoshikawa | Editor |
| Art | Takao Sawada | Art Direction |
| Production | Tomiro Kuriyama | Producer |
