SHINee's Key is set to make a comeback in September.

This will be Key's first solo music release in approximately seven months, since the release of his second repackaged album, 'Killer,' in February.

In June, SHINee's eighth full album 'Hard' also achieved remarkable success. Moreover, Key successfully wrapped up SHINee's solo concert in Korea after a hiatus of six years and nine months, showcasing the group's enduring popularity on their 15th debut anniversary.

Despite his busy schedule, Key is said to be meticulously preparing his solo album.