Both drama's tackle issues of the FL not understanding love, and being confused whether the ML's advances are romantically or sexually charged. The FL in both dramas are played by the same actress Morikawa Aoi, and the ML in Kakafukaka is the 2ndML in Bungaku Shojo. They aren't too similar in regards to the type of drama though, Kakafukaka is much more quirky and odd (and has more of a sexual theme), where as Bungaku is more conventional.