On the February 13 airing of Jonghyun's 'Blue Night', Suho made an appearance as the solo guest. When asked how he came to make a solo appearance, Suho answered, "The reason I came on 'Blue Night' is not only because Jonghyun is my label sunbae but also because he was my best friend who spent the trainees days with me."
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He continued, "In the past, it was almost as if we lived together but it's hard to see him nowadays. I joyfully came to the radio show with the excitement of meeting a friend for the first time in awhile."