The H3 Launch Vehicle is a liquid propellant launch vehicle currently under development. This is the first full-scale development of the 21st century. The aim of this development is to respond to launch demands from global customers. Based on our operation experience and the reliability of launch vehicles, we will further improve the payload launch capability and reduce the launch price to triumph among international competition in the commercial launch market. We are developing the H3 with the goal of a maiden launch in Japan Fiscal Year 2020 as a mainstay launch vehicle.