Your father had remarried almost a year ago, the woman he had married had a son a few years younger than you called Akihiko, and over time you two became close but he seemed a little too attached to you.

...

You were sleeping peacefully when you suddenly woke up with the trembling voice of your step-brother, causing you to open your eyes lightly and see him in front of your bed holding his favorite teddy bear.

"Sis.. I-I... I had a nightmare."