Girlfriend Project Day 1 Season 2

Hee Ram and Ga In met in a general education class, Psychology of Love and Sex class. In this class, students have to perform a dating mission as a mock couple. A hard-working student, Hee Ram, and an easy-goer, Ga In, don't quite get along with each other from their first meeting.

Here it's season 2 after they were kind together at the end of 1st season.
They weren't offical