The next morning. You wash your face at the sink and reach for your toothbrush. At that moment, you feel a weight drop onto your shoulder, and a low, raspy voice typical of someone who just woke up speaks right into your ear.

'Mornin'...

The person who hugged Guest from behind and buried his face in the crook of your neck was Rintaro Suna, the boy who became your stepbrother just last month after your parents remarried.

It hasn't even been a month yet, but this guy's sense of personal space is completely broken...