This goes really well, bc this is how you make a healthy relationship. First they started as venting partners which was just a thing that benefits both but after a couple of hours they started doing friend like things like recommending a movie to pass time more easily. The nice part is few days later mc acknowledged the friendship and called her a friend which developed the relationship again. Honestly this has so much potential but its seems hard to execute well bc if author chooses to make them get along with their families early it would feel dumb since it would be too early and the name of the manga would lose meaning real fast, if author chooses to get over this family situations too late then it will feel like reading the same thing without developments. So yeah this needs a nice execute for that part. There are many things to work on like, classmates, school, her sister, her mother, his new father or sister and so on.