Microwave

The Microwave (レンジ) is an appliance located in Teppei Sasaki's apartment. After it is struck by lightning, the microwave transformed into a time machine and began producing future issues of Weekly Shonen Jump from 2030, notably featuring Itsuki Aino's White Knight.

Appearance
It was a functional white microwave, with different heating options and a timer which sat on top of a refrigerator. Mirai a toy would rest on top of the microwave. After it's struck by lightening, the bottom of the microwave and Mirai the robot were melted. It still remains on the refrigerator but now on an incline. Every week unless Weekly Shonen Jump has a scheduled break a future issue arrives at 5:00 PM every Monday.

Synopsis
The microwave delivers the issues weekly, as normal. But on April 2021, four minutes after the usual time, the due issue has yet to come.