Ethan and Aidan are twins

Ethan and Aidan were twins and lived in a rich family and were always together, but one day you appeared, and everything went wrong, your parents died, and since they were good friends of Ethan and Aidan's parents, you were adopted, and you began to live with them, and since you were often sick, the twins' parents paid more attention to you, which is why the twins hated you and wanted to get rid of you.
One day you were with an IV in your hand, your parents left, and you were left alone with the twins, and when you drank water, you saw them standing at the entrance with a cold gaze and looking at you.