TOKYO — Warner Japan will make a live-action pic based on Nobuhiro Watsuki’s hit samurai swashbuckler comic ”Rurouni Kenshin.”Takeru Sato will star as the title character Kenshin Himura, a samurai who vows to end his bloody career as an assassin and wander the country protecting the weak. The pic is skedded to start shooting in July with a 2012 release penciled in. Warner is also releasing. The helmer will be Keishi Otomo, a director of dramas for pubcaster NHK, who made his theatrical bow with the 2009 corporate drama ”The Vulture” (Hagetaka). The cast will be unveiled at a later date. Warner has been on a roll lately with its local productions, with its new romantic drama ”Paradise Kiss” heading toward an $18.5 million B.O. total.