4-Nin 1-Kumi

 (4人1組; 1 Group of 4 People), was a Japanese idol group active from around 1993 to 2006. They were a sub-unit of Seifuku Koujo Iinkai.

4-Nin 1-Kumi originally disbanded in 2000, but were revived with new members in May 2002. It is unknown when this incarnation disbanded, but it presumably happened when all SKi members graduated in 2006.

2002 Revival

 * Yoshida Kozue (吉田梢)
 * Hoshikawa Ririka (星川りりか)
 * Kawano Reina (河野伶奈)
 * Matsumoto Kumiko (松本久美子)
 * Tezuka Machiko (手束真知子)
 * Yamikoshi Chika (山越千歌)

1993-2000

 * Yoshida Mirai (吉田未来)
 * Tamura Chiaki (田村千秋)
 * Honda Hiroko (本田博子)
 * Kikuchi Ayako (菊地彩子)
 * Hashimoto Mika
 * Uchida Emi (内田絵美)

Albums

 * 1) [1997.02.01] Jiyuu ni Ikiyou (自由に生きよう)