INFINITE’s Sunggyu Recalls Receiving a Three-Page Hate Letter Before a Concert

INFINITE leader Kim Sunggyu has opened up about a painful experience from his career, revealing that he once received a three-page letter filled with insults shortly before a concert. The singer shared the memory while reflecting on criticism, emotional resilience and the importance of recognising the people who genuinely support him. On October 27, 2026, INFINITE’s official YouTube channel released previously unreleased footage from the group’s advice and counselling content, which originally featured Sunggyu, Nam Woohyun and Lee Sungyeol on…