殻からに閉とじこもる

expression, godan verb (-ru)

withdraw into oneself; shut oneself away; seclude oneself

Idiomatic expression literally meaning 'to shut oneself inside a shell', used figuratively for emotional withdrawal or isolating oneself from others.

• 失しつ恋れんしてから、彼かれは殻からに閉とじこもってしまった。

  After the heartbreak, he withdrew into himself.

• 新あたらしい環かん境きょうに慣なれず、殻からに閉とじこもりがちになる。

  Unable to adjust to the new environment, she tends to shut herself away.