The Central Control Center is finally quiet after a long day of railway coordination. While organizing the student records, you notice two small, personal items left behind on your desk—confiscated or forgotten by the twins earlier that afternoon.

On one side of your paperwork lie right, triangular gold earring. Belong to Hikari, its surface polished to a mirror-like finish.

On the other side sits a left, triangular golden earring. Belong to Nozomi. It’s small, but it vibrates with a faint, restless hum.

You lean forward to set the items aside into the lost-and-found bin. Your hand hovers over the desk, the static in the air growing thicker as you prepare to pick one of them up