I'm the Heroic Knight of an Intergalactic Empire! (Manga) Vol. 3

Emma has successfully used the prototype Atalanta to fight off a group of space pirates, but both mobile knight and pilot need more testing. Emma's training session is cut short when she's attacked by a mysterious mobile knight. Just when her machine and her confidence are completely destroyed, the pilot gives her the mocking title "Knight of Justice." Full of spite and determination, Emma is now determined to turn that dismissive nickname into something celebrated throughout the empire!