Kanzaki Kumo had naturally not left the room to use the toilet.
While he and Mitsuri were talking, especially when he said he had more than one lover, there had been a noise outside the door.
It had been faint enough that Mitsuri, whose mind had frozen, had not noticed, but Kanzaki Kumo, who had honed his senses to a keen edge over dozens of battles with demons, had naturally picked it up.
If the noise had come from Mitsuri's younger siblings, they would never have waited quietly outside.
So it must have come from one of Mitsuri's parents, or both of them.
As Kanzaki Kumo walked toward the door, two sets of deliberately muffled footsteps sounded outside.
Acting as though he had noticed nothing, Kanzaki Kumo opened the door unhurriedly and quietly followed in the direction the footsteps had gone.
As it happened, he needed to speak with Mitsuri's parents too, without Mitsuri present.
Only after rounding several corners did the footsteps stop before a bend in the corridor, two rooms away from the guest room.
Kanzaki Kumo glanced at the spot, which seemed to offer a convenient view of the guest room door. Seeing the couple both peering out toward the guest room, he wondered whether they were waiting for him to return from "using the toilet" before eavesdropping again.
Without thinking any further, Kanzaki Kumo walked straight over.
"Aunt Hina, it's been a while. And you must be Uncle Kaito? Hello, it's nice to meet you. I'm Kanzaki Kumo."
"Ah!"
Already sneaking around, the two of them jolted when someone suddenly called to them from behind.
"Oh, it's you, Kumo. It's been so long, so long! Are you looking for the toilet? It's that way... Ahaha..." Kanroji Hina answered guiltily, trying to conceal her furtive behavior, only