noun
Legal and general term for a person who inherits property or rights. Gender-neutral in Japanese; English glosses distinguish 'heir' and 'heiress' only for translation convenience.
彼は莫大な遺産の遺産相続人になった。
He became the heir to a vast fortune.
遺産相続人として、彼女は家と土地を受け継いだ。
As the heiress, she inherited the house and land.