Tortured by Siblings

A Park Jimin is the 3rd child of the Park family. His mother really wanted to have 3 daughters. But this 3rd one, she gave birth to a baby boy. Knowing that, his mother didn't like him and didn't give him any love even from the first time he was born. Her first sister loved her little brother, but not her second sister and her mother. His father was happy and grateful to be blessed with a son. Can the mother and brother change to love Jimin? Or will it even make Jimin mentally down?