noun
person always at one's side; constant companion
Refers to someone who is always nearby, like a shadow, often implying a close, inseparable relationship. Can be used for a loyal friend, assistant, or even a persistent follower.
彼はいつも彼女の影身のようにそばにいる。
He is always by her side like a shadow.
あの二人は影身のようで、どこに行くにも一緒だ。
Those two are like constant companions; they go everywhere together.