All shows of the finale of NMIXX's first world tour have sold out. NMIXX will hold solo concerts closing its first world tour 'EPISODE 1: ZERO FRONTIER' at Inspire Arena in Incheon for three days from November 27 to 29. A presale for fourth-generation fan club NSWER members took place on NOL on October 26, followed by general sales on the 27th, and all three shows sold out. The tour began at Inspire Arena in Incheon on November 29-30, 2025, and continued with 21 shows in 17 cities across Europe, North America and Asia. Returning to Incheon, where the tour started, NMIXX plans to show its vocals and performances built on stage experience gained around the world. NMIXX released its sixth mini album 'Strange Muse' and title track 'Birthday Wish' on the 19th and is continuing music show promotions. The album also includes 'Kerosene', 'RudE TaLK' and unit songs such as Lily and Haewon's 'Sing to the Moon', Sullyoon and Bae's 'Hot 'n Unbothered' and Jiwoo and Kyujin's 'WHIP'.