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