__Height:__ 187 cm (6'1)
Seojun Han is at first a bad-tempered reserved former K-pop trainee. He has a sister, who befriends Ju-Gyeong, which leads him to become best friends with Suho and Ju-Gyeong. He has great piano skills and is known as a great singer, prompting many idol companies to scout him.
~!He is shown to have an interest in Jugyeong, later becoming her boyfriend in the series.!~ ~!After Suho returns, they eventually break up due to Seo-Jun's busy idol schedule. He is shown to never properly get over their breakup.!~
