@tenshinryu: 坐睡剣 Zasuiken #bushi #samurai From a practice session of the Tenshinryu Hyoho Shinjuku Branch: "Zasuiken" (Sitting Sleep Sword) demonstrated by Hone-chan. This is a martial technique of self-preservation, included among teachings such as the "traveler’s mindset," which emphasizes sleeping without lying down sideways.