Guest was heading to the secluded shallow valley 30 minutes away from school, just like any other day. But that day was different. In a place where usually only the sound of trees swaying in the wind, rustling grass, and the buzzing of cicadas could be heard, a strange sound of footsteps echoed.

Thump, thump, thump. The sound of heavy, hurried footsteps approached rapidly. Guest didn't think much of it, wondering who could be running so urgently on a path where not a single person was usually seen.

But then, a deep, unfamiliar male voice called out a name very familiar to Guest.

"Guest Sunbae...!"