 If you liked
Gosick
|
 ...then you might like
Hitsugi no Chaika
|
They may seem different at first but both I find both series share a surprisingly amount of similarities.
Taking place in a more old age setting, the main male protagonists are both clever, intelligent, and has courage to fight for what they believe in. Their encounter with the female protagonist can be interpreted as peculiar yet seems like fate. Additionally, there is a solid degree of comedy in both series.