kujon is probably the closest, but it means a person who gets good grades because he works on them very hard, especially by rote memorization and repeating. His method to learn anything is brute force. You never call someone who asks great questions a 'kujon'.
Nerd is different in that it's more about interests. If you're interested in any kind of science, biology, history, literature you're a nerd. Anime nerd is also a valid combination but it wouldn't work for 'kujon' because there's no repetition.
In Russia it used to be pretty common to see chess players in a park or train. Books readers were also more common in public spaces than in Poland. Russia has many problems for sure, but it has certain respect for intellectuals, composers etc.
Nerd is different in that it's more about interests. If you're interested in any kind of science, biology, history, literature you're a nerd. Anime nerd is also a valid combination but it wouldn't work for 'kujon' because there's no repetition.
In Russia it used to be pretty common to see chess players in a park or train. Books readers were also more common in public spaces than in Poland. Russia has many problems for sure, but it has certain respect for intellectuals, composers etc.