Weekly idol ranking website Fan & Star opened a birthday project for Yook Sung-jae, a member of the group BtoB, on April 3. Advertising celebrating Yook Sung-jae's birthday is a global fan-sim project posted in various places.

The Yook Sung-jae birthday event is a support-type event in which both domestic and foreign "Melody" (BtoB fan club name) can participate, and success is confirmed by the number of stars (points collected on the site). If more than 20,000 stars are gathered, congratulatory ads will be posted.

The way to participate in the event is simple. It is a way to donate stars that fans have gathered hard to advertising products they want. Stars can be obtained by doing various activities on the site or completing various missions.

Currently, the Yook Sung-jae birthday project features super-special products such as Hapjeong Station CM Board (Sagak Column), Gangnam Station SM Board (wall), Hongdae Station Multivision, Max Vision and Myeong-dong Media Pasad along with the electronic display boards of 43 stations on Seoul Subway Line 2.

With the event running until April 19, attention is being paid to whether it will be successful for the rest of the year.