子で子にならぬほととぎす

こでこにならぬほととぎすkodekoninaranuhototogisu

expression

  1. no matter how lovingly raised, a foster child is not actually one's biological child

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences