Twins?!

in this story the twins are 16, you are called y / n (if you do not know what y / n means your name) and you are 15. with Emilio you study in the same school he is one year older than you and you are in different classes, your best friend introduces you and ..... (Emilio is not included in the story, Emi is the main character at first, but then Ivan becomes the main character, read the story to see what's going on )