A flock of ghosts have invaded the mansion and security measures have been activated. The residents are locked in various part of the mansion and are to stay there until morning. In her room with Soushi, this is the perfect time for Ririchiyo to express her feelings for him, but this proves difficult. In the hallway, Natsume encourages Watanuki to use this time to train all night. In the cafeteria, Sorinozuka rests while Nobara plays games with Chino, one of the maids. In the kitchen, Karuta becomes so hungry that she starts to cook a full-course meal. Soushi stays up all night while Ririchiyo tries to go to sleep. But before doing so, she thanks him for his service thus far. Watanuki accidentally breaks the barrier, allowing the ghosts, known as the obariyon, to pass through. When it seems that the obariyon are wiped out, a few more came out and jumped on Ririchiyo's back. Soushi, who cannot bear the sight of this, destroys the rest of them.