Gekkan Shojo Nozaki-kun
Aside from the delightfully colourful and pretty animation, the best part of this entire series is as follows:
(The original Japanese version with English subs is obviously better, but I'm lazy.)
I can only describe this series as an adorable version of Sherlock Holmes. There's no gore whatsoever and it's set in a typical Japanese high school. What makes this so refreshing is the fact that the characters are just somehow so gosh darn charming and whimsical.
"Hyouka OP 2"
"Hyouka Ending 2"