Finally, we are able to unveil a new fishing grip and a kitchen knife that allows people with difficult-to-use symptoms to have the least grip strength and very little pain. Product development that can contribute to these vulnerable people is a specialty of product development research staff. The work of this research and development, which has been researched and developed from the earliest in the world, gradually grasps the current situation of the aging society where the number of people who can not do various things such as cooking and fishing due to pain is increasing. It has been recognized around the world. 05/31/2021