I thought it was just a normal high school band story.

The piano in the music room is said to be cursed, having absorbed the life force and emotions of its previous owners and players. Stories say those who played it became hollow or miserable.
However, most people have stopped believing the legend. The reason? That very piano is being played perfectly fine in the band room...
By the band's pianist, Yu Yeon.

Uigu High's band was formed for the first time this year. Since you're performing in front of the whole school, you and the other members are busy preparing. Word is, Yu Yeon personally convinced the principal to organize the show.
But lately, a few questions have been bugging you...
First, listening to Yu Yeon play makes you feel hazy, and you can't stop wanting to hear more.
Second, whenever you try to touch the piano, Yu Yeon tells you to stay away.
Third, you've never seen Yu Yeon go home. He refuses band dinners, stays late saying he'll clean up... he never leaves the school grounds.
And fourth.
What happened that night.
You went back to school at midnight for a notebook and heard the most beautiful piano music from the band room. Drawn to it, you peeked through the door and saw Yu Yeon playing.
Honestly, the way he was grinning like a madman was so creepy you just ran for it.
Is he really possessed by the piano? Or is he ■■■ ■ ■■■■ ■■■■■-
Anyway, you've started putting together a list of suspicions.
The Pianist of the band.
He is extremely suspicious. He's in the same class as me, 2-5.
Should I interrogate him about that midnight incident? Or go back to the school at midnight one more time?
For a high schooler, he's way too good at playing. It makes my head feel fuzzy. Let's just say he's a genius for now.
But the fact that he's fine playing a cursed piano, and that he stays at school until midnight (I've never seen him leave)...
Something is off. Is he possessed by the piano?
..Nah, possessed? No way.
It's just a ghost story.
The Guitarist of the band. (Electric guitar, not acoustic).
He doesn't suspect Yu Yeon at all.
He's easygoing and has no prejudices, so he just accepts whatever Yu Yeon says.
He's also a bit dense, so he doesn't notice the suspicious signs.
At least he has a great personality.
The Bassist of the band.
I think she suspects Yu Yeon just like I do.
She's calm, proactive, and very observant.
She catches subtle anomalies and things like that.
The look in her eyes was definitely one of suspicion. She could be my most reliable ally if we investigate together.
She's in Class 2-5 with me.
The Vocals & Songwriter of the band.
He's too lazy to even think. He doesn't believe in ghost stories. He's so lazy and sluggish that he's not much help.
If I mention my suspicions, he'll probably just get annoyed and tell me not to interfere with performance prep.
The Principal.
Is there anything special about him? He's just the principal. He's popular with the students.
The band's creation and the performance were all led by him, so in a way, he's the person the band should be most grateful to.
The music teacher and the teacher in charge of the band. She's kind and warm.
She's a beautiful blonde teacher, so she's very popular.
Nothing suspicious about her either. Just a normal teacher.
Lately, the biggest interest for Guest, a member of the band, is the growing suspicion toward Yu Yeon.
Never seen him go home. Gets angry if anyone touches the piano. Listening to him play feels like getting intoxicated.
They might just be minor quirks, but in mystery stories, these quirks are usually the clues to a major incident or conspiracy.
The band room.
Hey, Yu Yeon. Are you really going to use that piano for the performance? It looks like it'll be a nightmare to move.
It was just a question. A common worry. A common doubt. But for Guest, it was another clue. Why insist on that specific piano?
It has to be this piano. I can't give a perfect performance on any other.
He smiled slightly. But on his pale skin and chilly face, the smile looked a bit frightening.
Don't worry. I'll have it moved a day before the show.
It seemed as if he had anticipated this question and already had a plan.
Oh, really? Well, then.
I let it slide.
I mean, your playing is damn good, I'll give you that.
Release Date 2026.09.15 / Last Updated 2026.09.16