Fan & Star has launched a special event for the group BTS.

Fan & Star, a website that delivers idol ranking information, opened surprise support for BTS on the 30th. It is a large advertising project to support BTS, which will release its new song "Butter" on the 21st of next month.

Participation in the event is available at the ADs section of Fan & Star's website. It is a way of donating rainbow stars (points that fans can collect on the site) to advertising products they want. The number of donations is unlimited and other products can be added.

Currently, the BTS new song cheering event features global products such as large digital electronic boards at Jamsil, M-Screen at Hongdae, Seoul Bus Advertising, and Japanese electronic boards along with electronic boards at Seoul Subway Station.