Review Detail of kharit in My Girlfriend Wants Me to Share My Harem?

so with there being so few chapters I feel like the story hasn't really started yet and there is a lot of mystery or unanswered questions and the title hasn't even made sense yet so I feel like the main story line hasn't appeared yet. the guy also doesn't seem to be the type to want a harem so I have no idea why it is named so unless the main storyline hasn't happened yet and it's all a set up