While returning characters have Gaiden (side) stories, newcomers like Kojuro Katakura , Azai Nagamasa , and Oichi received full-length story campaigns.
You can find the through several community-maintained links and archives. This expansion to the original Sengoku Basara 2 was released in Japan on November 29, 2007, for the PS2 and Wii. Download Sources --- Sengoku Basara 2 Heroes Ps2 Iso Google Drive