Based on the provided information, Saitō Tatsuoki appears as a historical figure within "Ninja Girl & Samurai Master 2nd." He features among the cast of characters interacting with protagonist Chidori and other key Sengoku period figures. His presence occurs in group scenes involving Oda Nobunaga and his contemporaries. Visually, Tatsuoki appears alongside female characters such as Nene, Kicho, and Oichi in specific sequences.