こころをおににする

Frequency rank: 27,617. – 27,800.
    expressions (phrases, clauses, etc.); suru verb - included
  1. to harden one's heart; to steel oneselfidiomatic expression
Forms
  • こころをおににするFrequency rank: 27,617. – 27,800.
  • こころをおににする
Wiktionary definitions (experimental)
  1. .