- HaYeo (하여) (HaSeul and YeoJin)
- “My Melody” (2017)
- Both were born in South Korea.
- Both have monolids.
- Both have had rapping parts.
- Both of their representative colors are secondary colors.
- HaSeul is in LOONA 1/3, while YeoJin is in her own subunit.
- HaSeul is older.
- HaSeul is in the '97 line, while YeoJin is the sole member of the '02 line.
- YeoJin is an only child while HaSeul has a younger brother.
- HaSeul was born in Bucheon, while YeoJin was born in Daegu.
- HaSeul is in the vocal line, while YeoJin is not.
- HaSeul promoted on music shows before debut while YeoJin did not.
- HaSeul’s blood type is O, while YeoJin’s is B.
- HaSeul is a Leo, while YeoJin is a Scorpio.
- HaSeul’s representative animal is a bird, while YeoJin’s is an amphibian.
- HaSeul’s representative color is cool, while YeoJin’s is warm.
- HaSeul has cut her hair short, while Yeojin has not.
- YeoJin has bleached her hair post-debut, whereas HaSeul has pre-debut, finding hard to maintain blonde hair.
- They are in the group LOONA.
- They are sisters in the web drama Woomanna.
- Both were featured in the music video for Choerry’s “Love Cherry Motion”.
- There is a special section of LOONA Kick called YeoSeulTV.
- YeoJin once got jealous when HaSeul complimented Choerry.
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