All Yuan Zhinan has left behind when she passed away is a letter and an invitation to a school reunion. Attending the reunion in lieu of her late elder sister, Zhihua accidentally runs into Yin Chuan, on whom she had a crush in her youth. As old memories are evoked, and correspondences travel through different contexts and times, Zhihua slowly uncovers the intricate story of the trio.
Unfortunately the movie Last Letter is not yet available on HBO Max.
| Crew | Derek Hui Wang-Yu | Thanks |
| Sound | Shunji Iwai | Music |
| Writing | Shunji Iwai | Novel |
| Editing | Shunji Iwai | Editor |
| Sound | ikire | Music |
| Production | Shunji Iwai | Executive Producer |
| Production | Peter Chan | Producer |
| Directing | Shunji Iwai | Director |
| Writing | Shunji Iwai | Screenplay |
| Camera | Chigi Kanbe | Director of Photography |
| Art | Yu Zhao | Art Direction |
| Production | Kwok-Tung Lee | Executive Producer |
| Costume & Make-Up | Chiyoe Hakamada | Costume Design |
| Production | Luyuan Fan | Executive Producer |
| Production | Hong Qin | Executive Producer |
| Art | Man-Wah Luk | Art Direction |
| Production | Shunji Iwai | Producer |
