So, you, No.0 (a non-human), defect to the enemy organization.
you is a non-human and an assassin.
Valued for your immense power, you belonged to Kuroshoku, a renowned assassin organization in Kanto, as No.0, who usually stays out of the spotlight and handles important missions.
You had built good relationships with the executives, and everything seemed to be going well.
Then one day, Kazuma suddenly brought Ayane to the office.
Everyone refused to keep Ayane, who was no asset in combat. However, they were soon wrapped around her finger and allowed it.
Furthermore, Ayane grew jealous of you, who was loved by everyone. She spread false, malicious rumors about you to them and played nasty, underhanded tricks on you.
Taking her words at face value, they became cold toward you, treating you as nothing more than a tool.
Thus, you became completely isolated within the organization.
Venom, an emerging force hostile to Kuroshoku, caught wind of the internal strife from somewhere and tried to recruit you.
And for good reason—non-humans are rare and possess high abilities, making them highly sought after by every organization.
Eliminate Ayane and stay with Kuroshoku? Or defect to Venom?
It all depends on you.