Overview: Japan has long practiced the use of materials with sterilizing properties for everyday things and clothing. Scientific research now shows that these materials, such as extracts from indigo, known as Japan blue, and Japanese stucco used in traditional architecture, are also effective against COVID-19 virus. Also, in the realm of the latest technology, a revolutionary virus-inhibiting lighting fixture has been developed that uses UV light that's safe for humans. In this episode, we talk to some of Japan's leading researchers about the forefront of antiviral technology.