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'''Im Na-yeon''', known mononymously as Nayeon, is a South Korean singer. After participating in the reality survival television show Sixteen in 2015, she became a singer in the South Korean girl group Twice formed by JYP Entertainment. She is the oldest member of Twice.

'''Momo Hirai''', known mononymously as Momo, is a Japanese singer and dancer based in South Korea. She is a member of the girl group Twice, formed by JYP Entertainment. Momo is one of Twice's three Japanese members. She can sing and rap.