This was a really great series that managed to balance its constant hilarity with moments that were surprisingly profound or heartwarming. The cast of characters was almost universally endearing, mostly thanks to the incredibly comic performances that the various actors delivered. Despite all this, I found the series to be unexpectedly didactic, delivering viewpoints on topics such as friendship, honour and pragmatism. Unless you have an aversion to a bit of blood, this is a must see. My only regret is that it finished at episode 10.

P.s. as someone already pointed out, the theme song is a cover of 'Otoko no Kunshou'- https://www.youtube.com/watch?v=frC94k58Hvo - Jiro Sato, who played Riko's father, makes an appearance in this music video.