Kobacchi Ryo, who has walked with music as a rapper up to the present, felt the need to look back to his origins. In his third year of junior high school, he met a classmate. He was a singer who posted his singing voice on 'Nico Nico Douga'. He said to Kobacchi Ryo, "Your rap is perfect. Why don't you record it at my house?" I was surprised when he invited me to his house. What is his production environment? And what were his intentions?