In 2002, Tsugunaga auditioned for Hello! Project Kids with the song "Koi wo Shicchaimashita!" by Tanpopo. Her audition tape was aired on Morning Musume's variety show Hello! Morning. She was placed in th… See more

During Berryz Kobo's later years, Tsugunaga became known as the "cutesy character" of the group and with her mannerisms and twintail hairstyle. She was often referred to by the nickname Momochi (ももち) in … See more

• Momo (momo) (June 19, 2007, ISBN 978-484704018-4)
• Momo16 (Momoiro) (momo16 -ももいろ-, "Momo16 Peach-colored") (March 19, 2008, ISBN 978-404895015-2)… See more