connective N1 rare literarywritten
〜こそすれ — ~ if anything, but certainly not
〜こそすれ ・ こそすれ
A full written guide for 〜こそすれ is on the way.
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See 〜こそすれ in real sentences
Jengo shows 〜こそすれ the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.
Study it in JengoSources Compiled from published Japanese grammar references.