What's Up?

cast

• Lim Ju-hwan Jang Jae-Hun
• Oh Man-seok Sun Woo-Yeong
• Kim Ji-won Park Tae-Yi
• Im Joo-eun Oh Doo-Ri
• Cho Jung-seok Kim Byung-Gun
• DAESUNG Ha Do-Sung
• Jang Hee-jin Eun Chae-young
• Lee Soo-hyuk Lee Soo-bin
• An Seo-hyun Oh Doo-ri (young)
• Song Ok-suk Jang Jae-heon's mother
• Kim Mi-kyeong Professor Yang Soo-jung