"Gu Family Book" Lee Seung Gi and his natural instincts as a half-best become very apparent.

April 23, an episode of the MBC drama "Gu Family Book" featured Choi Kang Chi (Lee Seung Gi) showing his half-beast characteristic for the first time.

In this episode, Jo Kwan Woong (Lee Sung Jae) tries to frame Park Moo Sol (Uhm Hyo Sup) of conspiracy just like what he did to Yoon Seo Hwa's (Lee Yeon Hee) father. The situation appears to be calming down after Choi Kang Chi appears, but Jo Kwan Joong suddenly gets angry and stabs Park Moo Sol. Park Moo Sol falls to his death.

Choi Kang Chil tells Jo Kwan Woong, "I'm going to kill you" and right then, his eyes light up in green as he gets furious.

Even though this episode received significantly less viewing rate compared to the previous episodes, it still maintained its place at No. 1 with 14.4%. The highest viewing rate for "Gu Family Book" was 15.1% for its third episode.

The dramas that broadcast at the same time are KBS "Queen of Office" which received 14% and SBS "Jang Ok Jung Lives for Love" with 6.9%.