Oshi Tabi [JR East Official] on X: "[Thank you] The 'Saikoo de Trip Campaign' that was energized by DJ KOO and BEYOOOOONDS members has concluded! Thank you to all who participated! ／ Saikoo! What's a DJ Saikoo! What's an Idol Saikoo! What's Oshi Tabi Saikoo! Wow Wow ＼ #SaikooDE Dance #DJKOO #BEYOOOOONDS #OshiTabi https://t.co/aH85eLp9rn" / X