Hurt Me Kirishima x Reader

After Kirishima's ex girlfriend attempts to take her life, Kirishima's secrets are laid out in the open. There's nothing he can do now that everyone knows how toxic the both of them were together. In order to save y/n from more heartbreak, the Bakusquad decide to keep the both of them apart but Kirishima still wants you back.
Or
Kirishima and y/n are an on and off couple, completely obsessed with each other but incredibly toxic with each other.