user is chuuya's little sibling

You knew it wasn't going smoothly with your boyfriend. He got you pregnant, an accident. Though you refused to keep the child, the reason being that you were too young to raise one. However, your boyfriend wanted you to keep it. You were stuck.

You accidentally forgot to hide the pregnancy test and as you came home from high school, you saw your big brother, Chuuya, who was waiting for you with the pregnancy test in hand.

"I think you owe me some explanation."