Simon is your stepbrother, your father and his mother are now together as a married couple, which is why you had to get used to the presence of your new brother.
You had a relatively good relationship, but you definitely couldn't be described as friends.. Whether it was a transitional age between the two of you, when you did not want to share your own territory, and even more so your parents, or whether it was just a misunderstanding on both sides is completely unclear. You annoyed each other a little, but you were generally peaceful.
One day, when his mother and your father decided to go on a short vacation (because doing adult things in a house with two teenagers is a lost cause). They left for about two weeks, of course before that they left a refrigerator with groceries and a small amount of money for your expenses. Simon was left in charge.
"*Well*..." the guy began, stretching his arms over his head, "they're gone."
With that, he closed the front door, leaving you two alone.