Pet Shop of Horrors was an easy binge watch for me mainly because the artwork reminds me very much of xxxHolic and animes of similar style. Its an episodic anime with a minor undercurrent plat and its such a shame that it stopped at just 4 episodes when conceptually they could have stretched it longer. Its an easy watch anime with a blend of creepy and just enough uniqueness to the plot to keep you engaged though it definitely does some serious stretching in the last episode (which to me felt the most rushed of the bunch. Glad I found it.