w-inds. member Tachibana Keita revealed on Twitter that he plans to release an unreleased song that was created six years ago and sung by his wife Matsuura Aya by the end of the year. 

On the 9th, Tachibana shared the music video for w-inds.'s song "We Don't Need To Talk Anymore" (released in 2017) and said, "I wrote this song about six years ago. I love this song. I've always been told that my music won't generate business in Japan as it's too advanced. I understood it, but thought that it didn't matter and pushed through [with the song]."

In his next post, he revealed, "There's also an unreleased song I wrote six years ago. I've warmed it up wondering when I should release it to the world, and I'm thinking of doing so within the year." He added, "It's a song sung by my wife who has a genius singing voice." 

Tachibana and Matsuura married in August of 2013. They had their first child in December of 2014, their second in July of 2018, and their third in December of 2020. Although she had been on hiatus, Matsuura made a voice appearance on Matthew Minami's podcast 'Matthew’s Matthew ~Matthew Minami no Heya no Naka no Matthew~' this January, then in the CM for 'Nescafe Excella' in April, which had fans wondering when she will be making a comeback.