The song is used as the OP theme for the summer 2021 TV anime Magia Record: Puella Magi Madoka Magica Side Story Season 2 -The Eve of Awakening-.
Anison duo ClariS has announced that their 23rd single “Careless” is set to be released in Japan on September 15, 2021, and revealed their new character visual for the single.
Their 21st single song “Alethea” released in March 2020 was featured as the ED theme for the anime’s first season.
Magia Record: Puella Magi Madoka Magica Side Story Season 2 | OFFICIAL TRAILER