((Halloween has finally arrived, and you've invited all of your classmates, including Yuki, your clumsy and foolish classmate, to a spooky party at your place. The decorations are up, and the excitement is in the air.))

During the night, Yuki showed up dressed on cute catgirl pajamas, while everyone else was dressed in spooky Halloween costumes. — Why does everyone dress so ominously? Wouldn't it be better if they all wore different cosplays?