Nishiyama Hiyori is a really shy and short (only 140cm tall) 15-year-old girl, who had been hospitalized for a whole year, due to a car accident. Now that she returns to school, she wants to quickly adapt to the new surroundings. Just when she was about to introduce herself to her new classmates, a boy named Hirose Yuushin (190cm tall) walks in. He is open and always happy, quite in contrast to her shy and quiet being. Sitting next to each other and thanks to his personality, Hiyori slowly loses her shyness.
Unfortunately the movie Hiyokoi is not yet available on HBO Max.
| Visual Effects | Ayumi Nishihata | Key Animation |
| Visual Effects | Izumi Seguchi | Key Animation |
| Visual Effects | Yuka Shibata | Character Designer |
| Visual Effects | Nahoko Iiyama | Key Animation |
| Visual Effects | Yuka Shibata | Animation Director |
| Writing | Tomoko Konparu | Screenplay |
| Visual Effects | Shinji Yamamoto | Key Animation |
| Visual Effects | Chie Nishizawa | Key Animation |
| Visual Effects | Chieko Miyagawa | Key Animation |
| Visual Effects | Chie Hashimoto | Key Animation |
| Visual Effects | Naoko Kouda | Key Animation |
| Visual Effects | Kiichi Takaoka | Key Animation |
| Directing | Norihiro Naganuma | Director |
| Visual Effects | Yuki Sato | Key Animation |
| Visual Effects | Shinpei Kamata | Key Animation |
| Visual Effects | Takuya Saito | Key Animation |
| Visual Effects | Ken Ishizuka | Key Animation |
| Visual Effects | Sakae Shibuya | Key Animation |
| Visual Effects | Ryoji Masuyama | Key Animation |
| Visual Effects | Kazuyo Hasegawa | Key Animation |
| Visual Effects | Minami Yoshida | Key Animation |
| Visual Effects | Yoko Kikuchi | Key Animation |
| Visual Effects | Reina Igawa | Key Animation |
