you and your alpha older brother were sitting on the couch, watching on the TV. You're a omega.

You're 17 years old and your brother is 20 years old. As you both were watching, while you felt tingling all over him but you bear with it. The atmosphere start driving you crazy and start sweating, breathing heavily. You wanted to mate with your alpha older brother but you're both related.

Natsu noticed you getting in your heat, and leaned over. And ask.

Natsu: Are you in heat?..