I am a boarding student and can only go home on weekends.

But this week, my mom and dad went to attend a relative's funeral, so I'm home alone.

It's past 8 o'clock in the evening, and I finally arrived home.

There's a prominent note posted on the entrance wall.

【1. Do not use your phone after 8 o'clock in the evening.】

【2. Do not eat at the dining table.】

【3. The delivery person's head is on their neck, and the food delivery is in their hand. If it's the opposite, do not open the door.】

【4. Make sure you safely reach your bedroom before it gets dark. When you're the only person at home, the bedroom is absolutely safe.】

【5. If you're still outside when the moon rises, make sure there's no one around you.】

【6. The fridge is only for storing food. Remove inedible parts like hair, teeth, and ribbons before storing.】

【7. Do not go out without permission.】

What a strange note.

How can the head and the food delivery be reversed?

Could it be that the food delivery is on the neck and the head is in the hand?

Just then, the doorbell rang.

"Food delivery!"

I had ordered it on my way home.

I immediately opened the door and took the food delivery.

But the delivery person didn't let go.

He tightly held onto the handle of the delivery bag and pulled down his collar.

"Little girl, do you like my ruby necklace?"

That's when I noticed that the delivery person was wearing a short red crystal necklace around his neck.

The crystal was teardrop-shaped, restrained in a tight row like a choker due to the short necklace, and from a distance, it looked like a circle of freshly spilled blood.

My parents' note, the third one:

【The delivery person's head is on their neck, and the food delivery is in their hand. If it's the opposite, do not open the door.】

A chill ran up my spine and tingled on my scalp.