That was the deep scar Ryougi Shiki had carved two years ago.
"I am—"
Just as the monk was about to give his name,
new footsteps echoed through the first-floor lobby. Araya Souren turned to look.
When he saw who had arrived, he deeply furrowed his brows.
"I should have set up a labyrinth at the entrance. How did you get in?"
"It's merely a barrier that cuts off space. Did you really think it could stop me?"
The red-haired boy spoke as he walked into the lobby.
Fujino's face lit up with joy as she called out the name of her savior.
"Shirou!"
Volume Three, 162: "Ryougi Shiki"
"...Shirou Amamiya."
The magus—Araya Souren—maintained his troubled expression as he faced Shirou, who had entered from the doorway.
To guard against situations like this, he had set up a barrier around Ogawa Apartment that resembled a vast labyrinth.
The barrier's design was simple: anyone who had entered the apartment once and left would be absolutely unable to enter it again.
Despite having such a barrier in place, the red-haired boy before him had ignored it and passed through with ease.
Not only that, Araya Souren had not sensed him at all when he invaded the apartment.
"Did you kill Arba...? No, that's wrong. The one who killed him was Touko Aozaki. So it really did turn out that way."
The magus nodded as he spoke.
He seemed to have no feelings whatsoever about the result of the slaughter between his two old friends.
"My name is Araya Souren."
"I heard about you from Sister Touko. I see... This is my first time meeting a human who's lived even longer than Zouken!"
Shirou wore an expression of great curiosity.
Through the Boundless Mage's Eye, he deduced that the man before him had