Cha Eunwoo enlists in military, trends for buzzcut visuals and viral fan moments. His brother gains fame with TV debut, Fudan University background, and idol-like looks. Netizens dub them the "ultimate gene combo" for visuals, brains, and charm. While ASTRO’s Cha Eunwoo (born Lee Dong-min) has officially begun his mandatory military service, his younger brother, Lee Dong-hyun, has unexpectedly captured public attention with his first-ever TV appearance.