Fan & Star, a website that conveys information on idol rankings, opened its BY9 debut cheering support on April 26. It is a large advertising project to cheer for the group debut of nine trainees who failed to make the final group debut at Mnet survival program "Produce X 101," which ended on Wednesday the same month. 

It is a special event that takes place with the cooperation of "Fan & Star" with fans cheering for Lee Se-jin, Lee Jin-hyuck, Song Yoo-bin, Koo Jung-mo, Hwang Yoon-sung, Kim Min-kyu, Ham Won-jin, Tony, Geum Dong-hyun and others who are rising as members. The number of stars (points that fans can gather on the site) that fans donate to the project will determine their success.

Participation in the event is available at the Star Market section of the fan and star website. This is a way for fans to donate their hard-earned stars to support their BY9 debut support. Stars can be obtained by doing various activities on the site.

Currently, the BY9 debut cheering project has been achieved by 120 percent, and the advertisement for CM board (square column) at Hapjeong Station on subway line 2 in Seoul has been confirmed. The project has been inundated with congratulatory messages from fans, including "We'll gather nine people and cheer you on until the brightest moment on stage," "Be your Nine! By9!"

The BY9 debut cheering support runs through Wednesday, and details are available on the "Fan & Star" website.

Meanwhile, the fundraiser for BY9's debut surpassed 100 million won on April 22, drawing attention.