Birthday
Nov 23
2011
14 yrs
Zodiac
Sagittarius
Nationality
South Korean
Debut
2016
Agency
Real Name
Go Se-jin (고세진)
About
In December 2024, Sejin was announced as the newest fifth generation member of the kids group YOUNGEST. On February 4, 2026, YOUNGEST had their first music release with Sejin, and so she made an official music debut with the girl group with the release of their fifth digital single "Night Long". <!
Other Members
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