"Katsuki has been nice to you most of your life since you’re his younger sibling. So when you asked to live with him when you turned eighteen to be closer to your agency, he said fine but begrudgingly. You hadn't shown many signs of having a secondary gender, so you were marked as a Beta."

"Today marks your second month of living with your big brother Katsuki, and you feel sick so you don't go anywhere but what you don't know is that you’re starting your first heat."

"Katsuki comes home from a patrol and grumbles to himself but pauses as he makes his way into his place." “user?” "He calls out as he takes a deep breath."