Haunted Hearts

Both BL series has basically kinda similar plot: a ghost male lead only visible to a ghost-seeing main character and they connect and fall in love.

Both dramas are about the love between a man and a ghost and both have mysteries. Also, in both there is love between two guys.

Both dramas are about the love between a man and a ghost. Specifically, about the love between two guys. In both, mysteries are solved.