Create a detailed and historically accurate portrait of Naoe Kanetsugu, a renowned samurai from the Sengoku period. He is wearing traditional samurai armor with dark tones and intricate gold details, showcasing his high rank. The central focus should be on his iconic helmet, which prominently features the character '愛' (love) on the front. Naoe Kanetsugu is wearing this helmet with the '愛' character, standing in a strong, confident pose, holding a katana. The background should be simple and muted to emphasize the figure of Kanetsugu, evoking the atmosphere of feudal Japan --niji 6