Center-balanced "S" in pursuit of horizontal posture.The aim of this model is to ensure a horizontal posture even at extremely short distances. In addition, the time to show the body laterally to the target is to be as long as possible. Therefore, the weight balance pursues the limit where tailing is unlikely to occur. As a result, a body with a balance almost in the center was completed. By taking a horizontal position when falling, the speed will be slightly slower and will appeal to the target slowly. A major feature is the flushing due to the irregular fall that interweaves the thick and thin surfaces of the body.The asymmetrical design with thin wall on the front and thick on the back enhances the flushing effect by irregular fall and invites bites.Although the body shape is strongly deformed, the eyes are set realistically. It expresses the view of life and stimulates the feeding instinct.