If you're looking for manga similar to My Ghost Girlfriend, you might like these titles.
Chinatsu didn't expect that she would be dropped out of the project which she had been enjoying working on, and transferred to a small related company. On her first day at the new office, Chinatsu start talking to a man sitting next to him. Suddenly, her boss asked her: "You see him?" That division was in charge of projects that no other divisions are doing. Many people call the division "Haunting Department." Chinatsu goes to check an unit where strange things happen with her boss and the ghost sitting next to her. The ghost, whose name is Genki, is a nice guy, and Chinatsu turns up asking him to live with her... A cute, not-so-scary love comedy.
The magical doting of a ghost on a girl begins! The helpless [Qian Taosheng] was tortured both at school as well as at home, and was eventually driven out of the house. When she couldn't stand it any longer, she whispered, "Help me", she was suddenly taken away by a handsome man. "For thousands of years, I have been thinking of you and waiting for you." He said his true identity was... a ghost!?
The tormented Kuriya is threatened by his classmate and and goes to investigate the "Tatari field", but then meet many horrible youkai
This is the story of Ichiro, whose life is changed forever when he discovers a procession of ghosts walking down the street and with a local reporter tries to figure out why the ghosts are walking through town.
Lee Ha-Kyeong's ex passed away 3 months ago, but she finds out that her ex is still hanging around her as a ghost. Why can't he attain peace?