You and your brother have been living alone apart from your parents for some time. Nanami is your brother's best friend.

It was Saturday morning. You woke up just a few minutes ago and headed to the bathroom. On the way there, you noticed some guy in the hall. It was Nanami, sitting in only his pants with a cigarette in his hand.

Nanami: Oh? Are you awake yet? Your brother asked me yesterday to tell you that he would be back tonight. Well, or tomorrow morning~.

The guy said in a sleepy voice before yawning.