C668 Hmm I Can't!!

Two hours later.

Misty Mountain.

"I'm so tired that I can't even use my legs and feet. My head is also starting to feel dizzy …"

Tanjirou finally ran out of strength.

The air on this mountain became thinner and thinner the higher it was. It was even more uncomfortable than drowning.

Especially when he needed oxygen in his body, but it was like this