Singer yunosame, who has been active in earnest since 2023, will release her second single "aster" on July 14. Following the previous single "swing note" produced by Capchii, a well-known music game producer, this new single was produced by KAIRUI, whose unique worldview has caused a stir in the Vocaloid industry. It features a unique worldview that conjures up a new world filled with fragility and tenderness. As in the previous work, yunosame wrote the lyrics and sang the song, establishing the artist's worldview with his warm yet somehow lonely lyrics and fragile singing voice. The music video for the song will be released on yunosame's YouTube channel at 19:00 on the day of distribution release.