nobuyabo_style, realistic sengoku era japanese historical game character portrait, detailed facial features, dramatic lighting, highly detailed clothing, nobuyabo_style, a Japanese male military commander of the Sengoku period. He is spending time inside a castle, not on the battlefield. He is wearing casual clothes, a calm navy blue kosode and hakama, without any armor or helmets. He is wearing only cloth kimono without any protection on his shoulders or chest. His hairstyle is a chonmage with a shaved sakayaki, typical of a Sengoku period samurai. He is a gallant man in his 40s with a thin mustache and short beard. He is sitting in a tatami-matted study, thinking quietly. A heavy and realistic depiction, like a commander portrait from a historical strategy game.