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.
| Writing | Yuki Tanada | Screenplay |
| Directing | Yuki Tanada | Director |
| Directing | Daika Matsukura | Assistant Director |
| Production | Tsuyoshi Sugino | Casting Director |
| Sound | Toko Miura | Theme Song Performance |
| Sound | Jirafa | Music |
| Crew | Saori Masuko | Script |
| Art | Tomoharu Nakamae | Art Designer |
| Production | Gen Satô | Producer |
| Sound | Genichi Tsushima | Music Producer |
| Camera | Ryô Ohtsuka | Director of Photography |
| Editing | Ryuji Miyajima | Editor |
| Sound | Yoshikazu Suo | Original Music Composer |
| Production | Toramatsu Mamiya | Producer |
