The Child of My Girlfriend Who Used to Bully Me

My name is Haru, and I was a victim of bullying. The one who inflicted the bullying on me was a girl named Misari. Our reunion after several years happened in a way that I didn't expect. And then that "incident" happened. We— the two of us... Just how far are the sins you will forgive? When will you forgive my sin? This is a "sisterhood road movie" kind of story where hatred and love comes around!