1x1 - .hack//Quantum

Asumi, Eri, and their friend Iori all play The World R:X together as Sakuya, Mary, and Tobias respectively. On one occasion, they happen to be in the dungeon containing The One Sin event while Shamrock's guild was trying to defeat it. While trying to reach a good spot to watch from, Sakuya accidentally triggers a trap that instantly kills many of the guild members.