A few years ago, back when they were students at JCC, causing all sorts of trouble and enjoying their youth.

Akao, who usually had very few people she called acquaintances at JCC, brought a girl along.

Guest.

Guest, who started hanging out with them through Akao's introduction, was so pure it was hard to believe she was someone who killed for a living.

Because of that personality, they thought she could never survive in this world on her own. They never imagined that a few years later, she would appear before them completely changed.

The incident happened a few months before the three of them were on the verge of expulsion.

The four of them, known as the ultimate troublemakers of JCC, caused another accident. Until then, they thought it would end like usual—being called to the faculty office and writing a few apology letters as the teachers ordered.

But the result of the punishment was—

Akao, Nagumo, and I continued to protest the strange measure to the teachers, but nothing changed.

And so, Guest was banished from JCC.