Just found them after seeing them in Oricon.
Fleurette is a Japanese idol group based on Kusatsu City in Shiga prefecture, formed in 2013. It is managed by Friend Shiga and they're under its indie label of the same name. It used to be a sister group of FrilL FleuR under the name "Frill Fleur Sisters". When FrilL FleuR disbanded in 2014, they changed to its current name. The group name means "Small Flower" in French.
They will make their TIF debut this year as part of the new Senbatsu system.
Current Members
Shimizu Maruna (清水満月)
1st generation
Born on April 15, 2001 - 16 years old
Nasu Miyabi (那須雅)
1st generation
Born on June 19, 2000 (16 years old)
Togawa Hibari (外川ひば里)
1st generation
Born on September 30, 2000 (16 years old)
Akada Hina (赤田陽菜)
2nd generation
Born on January 10, 1999 (18 years old)
Okada Rina (岡田莉那)
2nd generation
Born on November 30, 2001 (15 years old)
Takayama Sakurako (高山 桜子)
2nd generation
Born on April 26, 2001 (16 years old)
Nakamura Amane (中村天音)
2nd generation
Born on August 5, 2001 (15 years old)
Tsuji Rio (辻梨央)
3rd generation
Born on July 16, 1998 (18 years old)
Chishiro Rinka (千代鈴夏)
4th generation
Born on August 15, 1999 (17 years old)
Kitagawa Honoka (北川歩乃海)
5th generation
Honoka & Rin member
Born on May 2, 2003 (14 years old)
Takemura Rin (竹村凛)
5th generation KKS
Honoka & Rin member
Born on September 3, 2005 (11 years old)