Gosick, Kyokou Suiri Recommendations
I must say that both these series have a lot in common, not only from the general "detective" style case solving but a whole lot more from having characters to atmosphere, to even the pacing of episode and story details.
Having an anime where a full episode can be filled by the main character just talking very technical without it getting boring is an amazing something in any form of media.
And that's what I directly found that it had a great similarity for me to Gosick and the other way around.
Both anime franchises are therefor really close and have a great similar setting!
Both anime have a smart loli as an MC. Both are mystery with a splash of romance.
it is quiet similar in that the protagonist (the guy) protect the female lead while they are trying to solve a mystery.
the female lead iwanaga is actually very similar in her deduction skill and making up "lies" Victorique.
both of this anime shows the dinamic of the two main protagonist and the struggle they have to face each mystery.
and the gotick vibe is pretty strong in both of this anime..
Both are mystery shows with guy-girl duos, where the girl is small, smart, and confident and the guy protects her on their adventures.