Hattori Heiji had just finished his deduction and was about to knock on the door again when the sudden ring of a mobile phone pierced the air, accompanied by a vibrating hum.
Inside the door, Nakagawa Akira's heart slammed against his ribs. Trembling, he patted the pocket where he usually kept his phone, and only when he realized it wasn't his ringing did he let out a breath of relief.
Toyama Kazuha fished her phone out of her bag, muttering an apology as she stepped aside.
Chapter 155