Akame ga KILL! ZERO, Vol. 9 by Toru Takahiro

Friends and family of the fallen have rallied to take revenge against the Empire's assassination unit-and with them is one Akame and her team had thought lost. Brainwashed, Najasho turns against his former allies, badly injuring Pony. Down a fighter, the assassination unit will have to employ every technique-and teigu-available to send their attackers to join their loved ones in eternal rest...in pieces!