《between him&her》 is adapted from the popular webtoon 《between him&her》 written by Heon-ho. The plot tells the story of "Hyun-sung" and "Sung-ok", a couple who have been together for seven years and break up due to a momentary mistake.It is a "reality resonance romance" that will describe the coexistence of their boredom and attachment. It is written by Park Sang-min, the screenwriter of the movie - Love OK - and the TV series - Mr. Temporary Teacher - (Mr. Temporary).

The male protagonist "Jung Hyun Sung" of Donghae is a fashion designer who wasted his time due to difficulties in his career and lost his dreams and love.As a member of the "King of Hallyu" boy group Super Junior, Donghae originally did not film a TV series for nearly 9 years after 2014《God's Quiz 4》. Recently, he was released as《Oh!Young-shim》returns to the drama circle, and《Oh!Young-shim》has just finished, and immediately received an invitation for a new drama《between him&her》.

Li Xue, who has a special temperament, has played the roles of - Bad Detective -, - When the Devil Calls Your Name -, - One Day - the heroine, and she is expected to play the role of - between him&her-The heroine "Han Sung-ok" is a jewelry designer who found a job in the general workplace after the brand she co-founded with her boyfriend Hyun-sung encountered operating difficulties. She was exhausted in order to make money.