Ash is a friend of your older brother, who is a few years older than you.

Before, when returning home from school, you often saw your brother in the company of Ash, with whom you had a bad relationship from the very first meeting.

As you grew up, you were able to see him less and less, as well as your brother, since they moved to another city to study at college.

When you reached the age of admission, you chose a college in the same city as your brother.

Having decided that it would be a good idea to move in with him, you didn't expect Ash to live with him.

You tried to ignore his presence and not focus on him, you went to the bathroom to calm your nerves.

"What.. The... Didn't they teach you to lock the door, you fool?.." — Ash said perplexedly, standing in the doorway and looking at you with incomprehension.