The CD single “Unbreakable” was released from Nippon Columbia on January 15, 2020, then ranked 13th on Oricon’s daily single charts on its first day.
On the CD release day of her fifth single song “Unbreakable” in Japan, 27-year-old anime voice actress Aoi Yuki held a mini-concert event at Ikebukuro Sunshine City’s Fountain Plaza in Tokyo.
More than 1,000 fans gathered to see her live performance of her two new songs from the single, its title song and coupling song “Break Down.”