Rino Sashihara is a Japanese entertainer who has taken on voice acting roles in several anime films, often as guest cast members. Her career is primarily rooted in the Japanese idol industry, where she gained prominence as a member of the groups AKB48 and later HKT48. Her work in anime voice acting represents a facet of her broader career in entertainment.

In 2015, Sashihara voiced a character in the long-running Crayon Shin-chan film series. She played the role of Sumaho-chan in the movie Eiga Crayon Shin-chan: Ora no Hikkoshi Monogatari ~Saboten Daishūgeki. The character's name, which translates to "Smartphone-chan," was given by the protagonist Shin-chan due to her constant use of her mobile device.

A notable role came in 2019 when she was cast as Ann in the popular One Piece franchise's film, One Piece Stampede. The character Ann, a singer with the ability to create illusions, was originally created by manga author Eiichiro Oda for a theme park attraction. Sashihara provided the voice for Ann in the film, taking over the role from Saori Hayami who had voiced the character in the live show.

Her voice acting work also includes the 2022 original anime film Goodbye, Don Glees! In this coming-of-age adventure story produced by Madhouse, she voiced the character Mako Kamogawa, the sister of one of the main protagonists.

These roles demonstrate a pattern of Sashihara taking on guest voice acting positions in prominent animated film productions, bringing her popularity from the idol world to anime audiences.