On May 17, Ryokuoushoku Shakai will release a new album for the first time in 1 year and 4 months. After the first Nippon Budokan performance and the first appearance in the NHK Kouhaku Uta Gassen, it is a single that marks the beginning of a new chapter in Ryokuoushoku Shakai. It is the latest work packed with the entertainment of these girls who continue to present POPS. And from May 20th, the nationwide hall tour "pink blue tour 2023" with "pink blue" will be held.