Sengoku Buyuden is an izakaya (Japanese gastronomic bar) located in Shinjuku’s famous nightlife district of Kabukicho. But it’s not just any regular izakaya–Sengoku Buyuden is a unique samurai-themed dining establishment, which offers locals and travelers with an interest in Japanese history the chance to experience the culture of Japan’s renowned sengoku (Warring States) era. Operated…