On October 21, 2018, at the Kumagaya Sports Culture Park Saitama Dome, the "Hello! Project All Stars Single Release Commemoration Event - Team Competition Singing Contest" was held to celebrate the release of the 20th-anniversary single!! The 55 members of Hello! Project were divided into Team Ayaka Wada and Team Mizuki Fukumura for a team competition singing contest!! *Please refrain from purchasing if you are nervous about the item as it is stored by a private individual.