None of the swordsmen knew what had happened in the Infinity Castle. Haruto only knew that ever since Gyokko had been killed, all the demons around Tokyo Prefecture seemed to have gone into hiding.
They had always been careful to stay hidden-to avoid attracting anyone's attention-but lately, they had become especially cautious.
Apart from the clueless new demons, practically every foul demon with any real strength had vanished overnight without a trace.
The sudden lack of work left Haruto uneasy, so he even wrote Tamayo a letter.
"Oh, about that...
Muzan has always been extremely cautious-a coward, really. Still, be careful. Those demons might be plotting something big."
Reading Tamayo's reply... was no different from not reading it at all.
Of course he knew he needed to be careful!
After thinking it over for a long time, Haruto decided to focus on what he ought to be doing. After all, a thief could plot for a thousand days, but no one could stay on guard against thieves for a thousand days.
"Hah... hah..."
His hands covered in blood blisters, Tanjiro kept hacking at the round boulder with his Nichirin Blade. "It won't break! It won't break!"
"Huff! Huff!"
In his demonized state, Genya stared with black eyes as he struck the round boulder again and again. Once his arms gave out, he abruptly backed away and raised his firearm. Bang, bang, bang!
It won't break! How could anyone possibly break a rock this huge?!
Clang, clang, clang, clang!
Bang, bang, bang, bang!
[A rock that big?]
[Rock: Stay awaaaaay from me!]
[You need a technical adviser: Zoro.]
[Three-sword style secret technique!]
[The Head Hashira's getting carried away!]
Haruto and Urokodaki stood nearby with their arms folded, watching for quite a while. Both wore expressions that were difficult to describe.
A