Why is "I Am Not a Robot." a must-watch?
Because the hero has an allergy to human contact and throws birthday parties with his gadgets. It's an enemies-to-lovers but also a friends-to-lovers story. An absolute Robot Romance with laugh-out-loud moments as well as emotional ones.

After Kim Min Kyu lost his parents and betrayed by people around him in his childhood, he develops a severe allergy to human touch. One day, he was approached by an AI team who made an advanced robot looking like our female lead Ji Ah, offering the robot to be his personal assistant. But the robot breaks just before being delivered to him, so Ji Ah is begged to fill in to be a robot. She can't tell him she's human because he's allergic to humans, but until when?

Thus, an absolute robot romance ensues, with laugh-out-loud moments as well as emotional ones. The plot is surprisingly dynamic because both leads have their own rich and interesting story. Min Kyu, he’s just a lonely man who lives alone in his mansion and throws birthday parties with his gadgets. I love how Ji Ah’s personality is still shown even during pretending to be robot AG3. Even when he was practically her boss, she made her own choices and finds her way to his heart. Because of her, the romance works naturally.

My praise goes to the actors’ performances; Yoo Seong Hoo whose emotions touch me beyond my expectation. His backstory is painful and his climax was really powerful. I'm always a sucker for actors who play multiple roles well because they’re literally changing on screen, just like what Chae Soo Bin did with her 3 roles; the robot, herself and herself pretending to be a robot.

This would have been a stagnant drama if it was only Min Kyu's story. Min Kyu has a ranking system for the electronics in his house, so when AG3 / Ji Ah, first enters this house, he tells her that the floor vacuum is actually her Sunbae (which means her senior), because she's the newest. And he calls only his favorite electronics "lovely." Ji Ah had a rich and interesting story that was all her own, and she had agency even during her pretense in AG3. Her Friend Mode is one of the reasons the romance worked because Friend Mode was actually Ji Ah's personality. She was responding to him as she normally would, and that's who he fell for. Even when he thought she was the robot, he didn't treat her like an object. He didn't treat her like an appliance. He treated her like a human, like a friend. She made her own choices, even when he was in charge. When she wanted to just close down an argument or when he was trying to make her clean, she would be like, "I have to go in power save mode, or my battery's gonna die." And she would just drop her shoulders, and her head, and close her eyes, and it was hilarious. And he'd be like, "Oh, I'm going to get you better batteries. I'm going to get you the best batteries in the world." Oh, it's so cute. He was the reason the romance worked and her storyline was the reason why the overall drama worked.

Why my rating for this drama is not so high is me not enjoying all of the tertiary characters and some boring subplots. However, I still think it’s a good watch for its’ unique premise and amazing performance by the leads!