I can't remember who first said it (and I couldn't find it with a perfunctory Google search, so I might be misremembering something), but I think I heard it said that "the greatest proof of intelligence is the ability to hide it". If so, then Cirno is the least ⑨ of all!
How to rule the Gensokyo without attracting attention of paramedicsA Certain Scientific CirnoCirnoMaths classPublic page on VK social network