← Back to browse鬼になるおにになる[onininaru]idiomJapanese definitionNo Japanese definition yet.English definitionto harden one's heart; to steel oneself; to be ruthlessExamplesNo examples yet.Loading examples…Ask about thisKanji鬼ghost; devilキ / おに、おに- · 10 strokes鬼吸血鬼鬼畜鬼ごっこ鬼神鬼才鬼太郎餓鬼