Moon Ha-won is an AI programmer and he is the founder of AH Company. He is a consistent person with a good heart. Meanwhile, Han Seo-woo works as a classical music recording engineer. Her life is unstable without a family or house, but she is a positive person.

Directed by: Lee Sang-yeob
Written by: Lee Suk-yeon
Tagline: Just having half of half of your heart is enough for me.
Cast:
Lee Ha-na Lee Ha-na
Moon Soon-ho 
Chae Soo-bin Chae Soo-bin
Han Seo-woo 
Lee Seung-joon Lee Seung-joon
Choi Jin-moo 
Lee Jung-eun Lee Jung-eun
Kim Min-jung 
Lee Sang-hee Lee Sang-hee
Jeon Eun-joo 
Jung Hae-in Jung Hae-in
Moon Ha-won 
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Also known as:
  • A Piece of Your Mind
  • Half of a Half
  • Half of Half
  • One Fourth
  • Дрібка твого розуму
  • 반의반