A Ninja and an Assassin Under One Roof Vol 3

From the Seven Seas Entertainment edition

IS THEIR LIFE TOGETHER AT RISK? Satoko the ninja and Konoha the teenage assassin have been leading an unexpectedly heartwarming life as roommates...but now, could their domestic tranquility be coming under threat?! Their story continues in volume three of a comedy that's as wholesome as it is unsettling!

Source: Penguin Random House API