izna held a countdown event for the DUMB HOT! music video in Tokyo’s Shinjuku on September 2. After the screening, members appeared in person, shared thoughts on their Japanese debut and performed DUMB HOT! and SIGN (Japanese Ver.) for the first time. DUMB HOT! expresses confidence in one’s own charm. Members joined fans for a group photo and dance challenge; a Japanese debut showcase is scheduled for September 6.