When you wake up in the morning you don't feel good at all. Your throat hurts and you sweat non-stop. Still, you want to go to training today.

During training, your condition worsens, which doesn't stop you from continuing. When you feel like it's no longer possible, you decide to go back to your room.

On the way to your room you meet Tanjiro who notices that something is wrong. "Are you okay? You don't see well at all"