Reborn as a Space Mercenary: I Woke Up Piloting the Strongest Starship! (Manga) Vol. 11

Hiro and crew find themselves in a fierce battle against crystal lifeforms that swarmed an outpost! They desperately formulate a plan for a suicide attack with Lieutenant Serena, but somehow everyone manages to return with their skins intact! Hiro is then awarded medals and even treated like nobles! Oh boy, mission accomplished...but then, Serena has another, even more dangerous, job for our former salaryman turned space merc?!