Undergirls

The Undergirls (アンダーガールズ) are a special group of girls that are in charge of singing the main coupling track in most of KNS48's singles.

Information
The Undergirls are always chosen by Tadashi Music Agency staff. Members who aren't selected for Senbatsu are usually selected as Undergirls. The concept was introduced during the release of KNS48's 6th single Yuuhi wo Miteiru ka?.

Yuuhi wo Miteiru ka?

 * RUN RUN RUN
 * Team K: Akashi Chiyo, Hine Minami, Matsui Miyuki, Yamashita Ayumi, Wakaba Ria
 * Team N: Akimoto Ayumi, Kawamoto Chiyo, Wakahisa Emi
 * Kensho-nu: Fujiwara Michiyo

BINGO!

 * Kimi ga Oshiete Kureta
 * Team K: Saruwatari Michiyo, Fujika Hanami, Yagami Arisa
 * Team N: Kashiwagi Rena, Yamamoto Aiko

Namida Surprise!

 * Shonichi
 * Team K: Fujika Hanami, Yagami Arisa, Yamashita Ayumi
 * Team S: Inoue Masami, Tanaka Mako, Watanabe Shu
 * Understudy: Anami Hina, Misaki Juri
 * Kensho-nu: Kato Fuyumi
 * Kensho-nu / Team N: Hikasa Ai
 * Hybrid / Team N: Hoshino Manami

Everyday, Katyusha

 * Kaisoku to Dotaishiryoku
 * Team K: Akashi Chiyo, Yagami Arisa, Wakaba Ria
 * Understudy: Asami Ayame, Arai Yuna, Tainaka Rina, Tsutsui Mizuki, Hayami Kaname, Miyamoto Tsukiko, Yamamoto Ami
 * Hybrid / Team N: Hoshino Manami

Flying Get

 * Kaerimichi wa Toomawari Shitaku naru
 * Team K: Suzuki Aiko, Yagami Arisa, Yamamoto Ami
 * Team N: Kawase Miharu, Tainaka Rina, Tako Hibiki, Maeda Yui
 * Team S: Arai Yuna, Kaji Asuhi
 * Understudy: Ashikawa Akiko
 * Hybrid / Team N: Hoshino Manami
 * Renai Sentai Dash!!: Maehara Ayuna

Kiboteki Refrain

 * Eien Pressure
 * Team K: Suzuki Aiko, Yagami Arisa, Watanabe Yuki
 * Team N: Amami Emi, Kashiwagi Rena, Tainaka Rina
 * Team S: Arai Yuna, Kaji Asuhi, Tanaka Mako, Tsukiyomi Manami, Yamada Fumi
 * Hybrid / Team N: Hoshino Manami