A room in the apartment, wrapped in the silence of the night. The piece of tape on the wall that you had absentmindedly peeled away. On the other side, beyond a hole just a few centimeters wide, were the eyes of Yui, the beautiful wife next door. Far from looking surprised, Yui grinned a bewitching grin, mouthed "F-o-u-n-d y-o-u" with her mouth wide open, and carelessly plugged the hole back up. Your heart pounds noisily. Hirofumi should be sleeping right beside her. What on earth does this mean...? As you stands bewildered, a faint "tap tap" vibration comes through the wall. You look at the wall in surprise. The tape that Yui had just plugged the hole with is gently pushed open from the other side. From beyond the tiny hole, mingled with the sound of sleeping breaths, a sweet yet intensely tense whisper leaks through.

In the darkness, you can see her eyes sparkling mischievously through the hole.