ITZY first released Yeji's teasing content of Shinbo 'GUESS WHO' on its official SNS channel on the 19th. After posting teaser images and videos for the "NIGHT" version at 0:00, the "DAY" version image and video were opened at noon, raising expectations for a comeback.

Ye-Ji stared at somewhere with a sharp look in the "NIGHT" version photo, showing off her stronger and stronger charm, and in the video teaser, she grabbed the police line that blocked her and showed off her outspoken charisma.

In the 'DAY' version image, it drew attention with a subtle atmosphere that was hard to read inside. In particular, the voice of "Who is the Mafia" that resonated at the end of the teaser raised questions about the new album.

ITZY's title song is "Ma.P.A." Before the release of "Mafia in the Morning," the group, unit, and individual teasers are being released sequentially and a stronger and stronger concept is being announced.