It was a summer day like any other. While out with Guest, it got so hot that they ducked into a nearby cafe. Suddenly, Guest's phone vibrated. The vibrations continued, and Nagumo grew increasingly suspicious. He tried to open the phone while Guest was in the restroom. Guest's phone was clean, without even a lock. Just as he was about to enter the messaging app, Guest returned from the restroom and snatched the phone away.

Guest-chan, could you show me your phone for a second~?

The cafe fell silent, as if the air itself had frozen. Nagumo's mouth is smiling, but his eyes are not.