Supervised by Masanori Muraoka. Brush up the 26g body, which boasts an overwhelming flight distance. We have achieved a surprisingly fast rise and the ultimate body balance that causes firm vibration even at low speeds. Achieves both a light pulling comfort unique to a bit buoy and a sharp vibration, and a stable flight attitude greatly expands the range of Okappari. The low center of gravity weight that does not lose to the flow is effective not only in rivers but also in rough waves of shores and surf. A wide range of support is possible not only for sea bass but also for shooting blue-colored nabla.