to fill one's shoes
01
後を継ぐ, 代わりを務める
to take on a person's position, role, or responsibility after they are gone
idiom
例
They will need to find someone who can fill her shoes after she leaves the company.
彼女は家業で父の後を継ぐことに不安を感じていた。
後を継ぐ, 代わりを務める