Man, now I'm glad Kaga wasn't working at Lawson back when Robba-san made his robbery. He wouldn't have had the chance to redeem himself through the power of Kashima's angelic love.
A knife is a knife, not a sword. A messer knife or a parang is still consider a knife despite how long the blade can be compared to other knives. And you wouldn't really call that robber a 'swordsman' either.
Unless you have danish archer Lars Anderson's level of accuracy, you would rather aim for the man, not for the weapon. Though in Kaga's case, she's making a warning shot. She could have kill the robber if she wants to with an arrow to the heart (literally).
Robba-san and Kashima's faces in the third panel are priceless.
That shared look is, yes. Now they'll never new able to be on the middle of another convenience store robbery without feeling a bit awkward about the memories and how Kashima completely broke down...