Osananajimi Kanojo no Morahara ga Hidoi nde Zetsuen Sengen shite Yatta: Jibunrashiku Ikiru Koto ni Shitara, Nazeka Tonari no Seki no Kakure Bishoujo kara Kokuhaku sareta  

I’m Sick and Tired of My Childhood Friend’s, Now Girlfriend’s, Constant Abuse so I Broke up With Her, 幼馴染彼女のモラハラがひどいんで絶縁宣言してやった ~自分らしく生きることにしたら、なぜか隣の席の隠れ美少女から告白された~

It seems that your childhood friend has become your girlfriend but you are experiencing negative feelings towards her as she often insults you daily. This has been affecting your mental well-being and you have decided to end the relationship. It appears that this decision has led you to begin your breakup story.