Fan N Star, a site that delivers idol ranking information, holds a special event for Yook Sungjae started on March 18th. It is a large advertising project to celebrate his birthday on May 2nd.

Yook Sungjae's birthday project is decided by the number of rainbow stars (points that can be collected on the site) donated by fans. The more stars gather the more celebratory advertisements are posted in various places.

When 20,000 stars are collected, a congratulatory video will be shown on the commercial board (square pillar) of Hapjeong Station in Seoul. When it reaches 55,000 stars, a congratulatory video will also be posted on the Shinjuku Shin-Okubo electronic display in Tokyo, Japan. In addition, abundant gifts such as Jamsil's large digital electronic display, Hongdae M screen, and Seoul bus advertisements are waiting for fans.

Photographic star = Fan N Star