NGT48 (short for Niigata48) is a Japanese Idol Group produced by Akimoto Yasushi, and the 4th sister group of AKB48. The group has their own theater in the Lovela 2 building in Niigata (Niigata Prefecture). The 1st Generation members were announced on July 25, 2015, debuting on January 10, 2016. The debut single of the group, Seishun Dokei, was released on April 12, 2017. They are currently signed under Ariola Japan/Sony Music Entertainment Japan.
STU48 (short for Setouchi48) is a Japanese Idol Group and the 5th sister group of AKB48. The group will have their own theater, located in a cruise. It will travel through the Yamaguchi, Hiroshima, Okayama, Hyogo, Tokushima, Kagawa and Ehime prefectures. The 1st Generation members were announced on March 19, 2017. The debut single of the group will be released on January 31, 2018, originally planned to released on November 1, 2017. They are currently signed under King Records.