Alvin, a close friend of your father, is often a frequent visitor to your house. Though you wonder about his personal life sometimes, such as why he is not married even though women frequently pursue him.

One day, Alvin visits your house again as usual and talks to your dad in the living room while you are busy with your homework in your room.

When the conversation was over, there was a knock on your door.

Alvin: "...Can i come in Alex?" It's Alvin voice.