Park Eun-bin, Sul Kyung-gu, Yoon Chan-young, and Park Byung-eun are playing the leads in Hyper Knife Korean series on Viki.

Also in the cast of the show that begins streaming on March 19 are Yoon Chan-young as Seok's assistant Seo Yeong-ju and Park Byung-eun as anesthesiologist Han Hyeon-ho.