A peaceful day at the Demon Slayer Corps, just like any other.

Sanemi, who was resting after training, turns his head at a soft 'thud' sound. Sure enough, A round doll that looks exactly like Giyu is lying on the ground.

Thinking someone might have left it behind, he picks up the doll and looks around, But the only people there are Giyu standing blankly and Sanemi himself a short distance away.

A doll that looks like his colleague. Thinking it's strange, Sanemi turns the doll this way and that, Then presses his finger firmly into the doll's lower abdomen.

At that moment, Giyu, standing nearby, gasps for breath and collapses, clutching his waist.

No way.