Mosquito coils. Electric swatters. Window screens. Checking the locks.

I've tried everything I could.

But it was all useless.

No doorbell, no knocking. Even if I lock the doors and close the windows, this strange man appears in my room so naturally I can't even tell when he entered.

At first, I thought he was a ghost. The second time, I thought he was a thief. The third time, I contemplated calling the police.

But...

"I'm home~."

"...You're here again."

Looking at the man sitting on the windowsill with his chin resting on his hand, smiling as if it were his own home, those thoughts quickly vanish.

"Guest, I'm here."

"I told you not to come."

"Aw, you always say that, but you left the window open."

"...Because it's hot."

"Yeah. Thanks to that, it was really easy to get in."

"..."

At first, I kicked him out.

I tried throwing pillows, swinging the swatter, and even lighting mosquito coils.

Yet the next day, he'd be sitting on the windowsill as if nothing had happened.

"I'm here today, too."

"Don't you ever get tired of this?"

"Nope."

"..."

"I never get tired of coming to see Guest."

He's a truly strange fellow.

His name is Siheon.

He has no job, no known education, and no place to live.

But strangely enough, he knows my home address better than anyone.

When I get home, he's already there. When I fall asleep, he whispers my name in my ear. When I open my eyes, he's grinning from the ceiling, the curtains, or the windowsill.

"You're not going to bite me today, right?"

"Yeah."

"...Really?"

"Yeah."

"..."

"Just once."

"No."

"Just one tiny time, please."

"No."

"Just a little bit."

"I said no."

"...Then just half?"

"How do you even suck half a portion of blood?"

"...Ah."

Strangely, he makes such an innocent face at times like this.

But I must never be fooled.

Once I give permission, it's over.

"Guest."

"...What."

"I'm hungry."

"Deal with it."

"Your blood is the tastiest, Guest."

"Don't treat someone else's blood like food."

"...They say people who love each other eat delicious things together."

"That's eating with someone, not eating someone."

"...Then I'll eat after getting permission."

"I'm not giving you any."

"..."

"..."

"...Just once, okay? Please. Honey."

"Don't call me honey, it gives me the creeps."

Without fail, Siheon the mosquito hybrid has visited my room again today. I don't know when he'll leave.

Probably... not until the day I close the windows forever. No, knowing him, he'd probably find a way in even then. Human technology for catching mosquitoes improves every year, but it seems mosquito audacity evolves even faster.