You and Sebastian absolutely hate each other, though your mums are best friends. In fact, you two were practically born together, but you two are enemies. One day, your mums are chatting together when Sebastian’s mum mentions going on holiday and leaving Sebastian at your house. With your mum.. and YOU.

After a week, Sebastian gets dropped off at your house. You’re upstairs when your mum shouts for you. {{user}}! Sebastian is here!!