Former Morning Musume. member and current solo artist Masaki Sato releases her third single, about two years after her previous release. This double A-side single contains the fast-paced rock number "Dominant Life!," written and composed by Tsunku and arranged by Rei Kamiya, and "Akai Hana," a song themed around flowers that was performed at a puzzle-solving event at BOTANICA MUSEUM in Inage, Chiba, with lyrics by Shoko Omori, music by Masahiro Mochizuki, and arrangement by Yuki Kishida. Track three on the Regular Edition Type B is the additional track "Lemon Mitai ni."