The idol weekly ranking site "Fan N Star" has been holding a surprise support event since June 24th to celebrate the 4th anniversary of Jeong Se-woon's debut. It is a global fan sentiment project where advertisements celebrating his 4th anniversary debut will be posted in various places.

Jeong Se-woon's project to celebrate the 4th anniversary of his debut will be confirmed successful by a number of rainbow stars (points that can be collected by fans. If more than 20,000 stars are gathered, a congratulatory advertisement will be held.

When the number of stars reaches 20,000, a congratulatory video will be shown on the CM board of Hapjeong Station on the Seoul Subway. When 55,000 stars are gathered, a congratulatory video will also be shown on the Shin-Okubo electronic display board in Shinjuku, Tokyo. In addition, super-special gifts such as the Hongdae M screen, Jamsil large digital electronic display board, and Seoul bus advertisements are prepared.