아이오아이 has made a successful comeback after 9 years, releasing their third mini-album 'I.O.I : LOOP' and achieving number one on Melon's Top 100 chart with their title song '갑자기'. The group held a concert at the Jamsil Indoor Stadium in Seoul from May 29-31, marking their first performance together in 9 years. - The group's third mini-album 'I.O.I : LOOP' was released on May 19. - 아이오아이 achieved number one on Melon's Top 100 chart with their title song '갑자기'. - The concert was a part of their '2026 I.O.I Concert Tour: LOOP' and marked the beginning of their Asia tour. Q: Why is this trending? A: 아이오아이 is trending due to their highly successful reunion and comeback after 9 years, which has garnered significant attention and enthusiasm from fans and the k-pop community. | 아이오아이 has made a successful comeback after 9 years, releasing their third mini-album 'I.O.I : LOOP' and achieving number one on Melon's Top 100 chart with their title song '갑자기'. The group held a concert at the Jamsil Indoor Stadium in Seoul from May 29-31, marking their first performance together in 9 years. - The group's third mini-album 'I.O.I : LOOP' was released on May 19. - 아이오아이 achieved number one on Melon's Top 100 chart with their title song '갑자기'. - The concert was a part of their '2026 I.O.I Concert Tour: LOOP' and marked the beginning of their Asia tour. Q: Why is this trending? A: 아이오아이 is trending due to their highly successful reunion and comeback after 9 years, which has garnered significant attention and enthusiasm from fans and the k-pop community.