Summer Favorite Singing Relay (1700)
https://www.youtube.com/playlist?list=PL2uroT9_BdVnLnToO0TNyjPtl1ZEtBETa

Girls from Specialite, Akashic Production, Airy Production. PROJECT NEBULA, Unifee!, First Stage Production JP, AiceClass Honeyworks Nyantasia! Uniraid! and Varium. Joint Multi-mid to small corpo relay.