HTV-X1

First flight of the H3-24W configuration, which pairs two LE-9 engines with four solid rocket boosters and a wide fairing. It carried HTV-X1, the first of JAXA's new cargo ships to succeed the HTV series.

HTV-X1 berthed at the ISS on 30 October 2025 and was released on 6 March 2026. Five days later it deployed Nihon University's Ten-Koh 2 cubesat, the first use of JAXA's H-SSOD deployer.