Sungjae
BTOB
3rd Gen (commonly-cited era, approximate)Verified facts
Real nameYook Sung-jae
Birthdate1995-05-02
Group debut2012-03-21
Group size6 members
Stats — real computed numbers, never invented ratings
All facts are sourced from public profiles/Wikipedia and verified before being added. Age and years active are computed from today's date, not a fixed snapshot.