It has a good lesson to learn from. It shows a robot who is more humane than humans who are as heartless as robots.

Though you have to forgive the inconsistencies in how the robot was depicted and/or acted in some situations.

The male lead is so good-looking.

I found the female lead's character interesting in the earlier episodes but annoying towards the end, especially when she became overprotective of the robot than of human life. Probably because she's too much in love. But such love affair is too weird and creepy.