NMIXX met local fans at a showcase in Tokyo ahead of their official debut in Japan. On the 7th and 8th, NMIXX held their debut showcase "NMIXX JAPAN DEBUT SHOWCASE 'N=MIXX'" at Yoyogi National Gymnasium First Gymnasium in Tokyo, performing a total of 20 songs, including Japanese versions of signature tracks and new songs. Opening with "Love Me Like This," NMIXX unveiled for the first time Japanese versions of "O.O," "DASH," "KNOW ABOUT ME," "Blue Valentine" and "Birthday Wish," all of which will be included on their Japanese debut album. The show also featured talk and games hosted by MC Masayuki Furuya and a cover of "Mela!" by Japanese band Ryokuoushoku Shakai. During the encore, a cake celebrating their debut appeared as a surprise. NMIXX said, "We sincerely thank you for being with us at the start of our Japanese debut. It was a happy two days, and we're even more excited about the future." NMIXX will release their Japanese debut best album "N=MIXX" on December 9 and hold a showcase in Nagoya on the 12th and 13th of the same month.