returning newcomer; person who has just made a comeback; rejoining former employee
Refers to someone who has left a group or organization and then returned, often used in workplace or social contexts. The term carries a nuance of being a 'newcomer' again despite previous experience.
He returned to his former department as a returning newcomer.
帰り新参の社員は、また一から人間関係を築かなければならない。
A rejoining employee has to build relationships from scratch again.