26-year-old Hachiko Hojo works as a train attendant, selling items on a cart. She's good at her job, but she lacks self confidence. One day, she meets a movie producer. They decide to visit tourist attractions in Hakone, Kanagawa Prefecture, Japan. Hachiko Hojo looks back upon her life along the way.
Unfortunately the movie Round Trip Heart is not yet available on HBO Max.
| Directing | Yuki Tanada | Director |
| Writing | Yuki Tanada | Screenplay |
| Crew | Saori Masuko | Script |
| Directing | Daika Matsukura | Assistant Director |
| Production | Tsuyoshi Sugino | Casting Director |
| Sound | Toko Miura | Theme Song Performance |
| Sound | Genichi Tsushima | Music Producer |
| Sound | Jirafa | Music |
| Art | Tomoharu Nakamae | Art Designer |
| Production | Gen Satô | Producer |
| Camera | Ryô Ohtsuka | Director of Photography |
| Sound | Yoshikazu Suo | Original Music Composer |
| Editing | Ryuji Miyajima | Editor |
| Production | Toramatsu Mamiya | Producer |
