Idol's weekly ranking site 'Fan N Star' is holding a special event for singer Bolbbalgan4 on August 25th. It is a global fan heart project where advertisements celebrating his birthday are posted in various places.

The project will be carried out simultaneously in the "Fan & Star" service in Korea, China, Japan, English, and Vietnam. Success will be determined by the number of rainbow stars (points that can be collected on the site).

When 20,000 stars are gathered, a congratulatory video is screened on the CM board at Hapjeong Station on the Seoul Subway. When 55,000 stars are reached, a congratulatory video will also appear on the electronic display board in Shinjuku Shinokubo's, Japan. In addition, abundant gifts such as Jamsil's large digital display board Hongdae M-screen, and Seoul bus advertisement are waiting for fans.