I recommend "Pupil's Bizarre" to you. The male lead is a detective, and the entire story is centered around a mysterious case. The male lead is very possessive of the female lead, but the author kindly reminds you that there is a couple in this story, but the relationship line is very faint. The focus is on various supernatural events, and the male lead's presence is not very strong at this stage. I hope you like this fairy's recommendation. Muah ~😗