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Natsuko (2012)
Kanji 奈津子
Kana なつこ
Romaji Natsuko
Nickname Nacchan (なっちゃん)
Birth Info
Birthdate August 18, 1989  
Birthplace Flag of Japan.png Chiba, Japan
Blood type O
Current Age 34 Years Old
Height 160cm
Professional Info
Agency Asia Business Partners Inc.
Social Networks Ameblo / Instagram / Twitter / YouTube
Idol Career Info
Former Group SDN48
Former Team 2nd Generation
Debuted May 2010 / 2nd Generation
Graduated March 2012

Natsuko was a member of SDN48's 2nd Generation. She is now affiliated with Asia Business Partners Inc.


  • Her real name is Ōki Natsuko (大木 奈津子).
  • She is the twin sister of Akiko.
  • After graduation, formed the duo Natsuaki with Akiko.
  • She obtained the qualification of "Home Appliance Advisor" in 2015. Since then, she has been serialized in various publications reviewing and talking about home appliances.
  • On December 8, 2018, she announced her marriage.
    • She gave birth to her first child on May 22, 2021.

Team History

SDN48 2nd Generation → Graduation
Joined SDN48 as a 2nd Generation member on May, 2010
Graduated on March 31, 2012

Singles Participation

SDN48 B-Sides

Albums Participation

AKB48 Albums


Stage Units

SDN1 (Yuuwaku no Garter)
Black boy
I'm sure

Media Appearances

Variety Shows


Natsuko after her graduation (2017)
Natsuko (2010)