On March 11, Wooseok x Kuanlin held the showcase for their unit debut with '9801.'
Lai Kuan Lin, who's known to be a huge fan of Wooseok, shared, "I loved Wooseok since the trainee days." He explained, "During the trainee days, my eyes naturally went towards Wooseok since he's tall. He was so good at rapping, as well as dancing. So I started dreaming of becoming an amazing singer like hyung."
Wooseok also said, "When Lai Kuan Lin first entered our company, employees told me, 'There's someone just like you,' so I checked. He looked at me with loving eyes so he caught my attention more than others and I think I took good care of him since then."