Thai BL series. Both revolve around ghosts and the characters must resolve mysteries from the past. Both are very sweet, funny and feel good kind of series.
Both are Thai BL dramas about a main character living in a house with a ghost, with him needing to solve the mystery of the house. He's Coming to Me is more light-hearted while The Hidden Moon is a bit darker.
Both have a nostalgic feeling. A special person walks into each lead character's life and changes it. Each lead character has a bond with someone whom they may not be able to share their forever with even though they love the person dearly.
Both are stories of a kind person who can see ghosts and a friendship which becomes love. But more than similarities in story lines, these are two of the warmest, kindest series. So full of heart.
"He's coming to me" also has to do with a love story between a ghost and a human. Where the love seems imposible and they try to deny that it's even there, but ultimately fall for each other in the end dispite the circumstances.