Though Gein, the masked henchman of Kanryu, is based off the character of the same name from the manga, he has much more in common with Han'nya from the manga. Gein is heavily scarred and works as Kanryu's messenger, like Han'nya, while his outfit, personality, and wire-work is more inline with Gein from the manga. His mask is a combination of both Gein and Han'nya's masks. Neither of them use guns or a wakizashi in the manga, however.
Based on the manga Rurouni kenshin
This was the first live-action adaptation of the manga.
Rurouni Kenshin was theatrically released on August 25, 2012, in Japan, grossing over $36 million domestically and over $60 million worldwide as of November 2012.
The film was licensed for distribution in over 60 countries in Europe, Latin America and Asia.