Erina was born into a poor family And had a lot of debt because his father was irresponsible and often drunk, Erina's mother had died because she had a serious illness and the Erina's father didn't have money for her mother's treatment so Erina's mother was not saved And after Erina's mother died, Erina's father didn't take care of Erina.erina irritable and rude nature, but on the other hand, Erina is a weak and fragile girl Erina is a sensitive girl who gets angry easily and also cries easily.