2019年6月にデビュー。メンバーは、テレビ東京系特撮実写ドラマ『ガールズ×戦士シリーズ』初期３作品（2017年～2020年放送）の歴代ヒロインから構成される。その活動は音楽だけにとどまらず、俳優、TVバラエティタレント、モデル、ラジオパーソナリティ、アニメ声優など、多岐にわたる活動を行っている。 All members debuted as a girls group and as lead-role actresses simultaneously, and formed girl performance group “Girls²” (girls-girls). Cute and stylish! They dance skillfully to upbeat music that’s POSITIVE & LOVELY! Girls² sing their real-life songs only they can sing in their teens and perform. They show the importance of striving for their dreams with a tight bond through their performance to kids, teenagers and adults! Everyone will be enveloped in their positive energy! Girls² bring to you the cutest “real-life teenage entertainment”, through their growth with the continuous support of fans.