TVXQ appeared on KBS "Do Dream" and tried out the relay lectures.
This episode's lecture theme was 'Dreams do not Abandon Us' and Yoonho commented, "My mother's side is all vocalists and I think I received their talent because I won a contest when I was young for the vocal section."
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However, Yoonho also talked about his sudden hormone abnormality then caused him to get a lump in his throat. Yoonho commented, "I couldn't even talk straight with this and so I even thought about giving up my dream as a singer."
However, after a long and arduous journey, he was able to debut as a singer. Yoonho commented, "Once, before a concert, the part of my throat that I had surgery on backfired and about 40-50 lumps appeared on my face and neck."
He continued, "The agency told me that I needed to rest, but I wanted to show the audience that I was trying my best. I ended up numbing my neck and going on stage," bringing shock to the audience.