In the novel, the heroine's nickname is Sansan, and the hero is a family reorganized by both parents, nominally his brother.

I also forgot the name after reading this book, but the man is not a photographer. He just likes a photo, as if he bought it on purpose later. It seems that a man took advantage of that woman at the beginning of the company and fell in love with her. The woman misunderstood that the man used her, then left him and found that he was pregnant. As a result, he repaired the light bulb and lied to the man that he knocked it off himself. I remember.