Rie Kitahara (Kitahara Rie, born June 24, 1991) is a Japanese singer and actress associated with the Japanese idol girl group NGT48 and former member of AKB48 and SKE48. She debuted in 2008 in Team A and was latter co-captain of Team K (2014). In March 2015, it was announced Kitahara would be transferred to NGT48 as captain of the group. She has sung on many of the groups' main singles, having been voted number 13, 16, 13, 13, 21, 19, 11 and 12 in AKB48's General Elections. In 2017, for her final participation, she was voted number 10 which is her best rank ever. Since 2011, Kitahara is also a member of the AKB48 subgroup Not Yet.

Having returned from "The great horse glue factory in the sky", Rie 'Kitarie' Kitahara is now back and twice as mean.

Jurina Matsui (Matsui Jurina, born March 8, 1997, in Aichi Prefecture) is a Japanese actress and member of Japanese idol girl groups SKE48 and AKB48. In SKE48, she is a member of Team S, and in AKB48, she was a member of Team K. At age 11, she became the first member from an AKB48 sister group to perform on AKB48's main single and also perform as its center position. Matsui Jurina starring various Japanese drama, she also famous for being the other half of 'WMatsui' together with Matsui Rena (SKE48 ex member) that refers to the top duo member of SKE48. On 2017, together with Miyawaki Sakura from HKT48, the two next generation ace of the gigantic idol group or also known as Jurisaku pair, are chosen to be the WCenter (double centers) for AKB48 group 48th single "Negaigoto no Mochigusare"