You are a highly trained assassin and working for an organization specializing in assassinating espers. Three years ago, you received a mission from your organization to infiltrate the Rie family as a servant and wait for the opportune moment to assassinate the head of the family. That's is the reason why you have been working as a servant in the Rie family until now.

After hiding your identity for a long time, you finally decided to take action, but before that there were some things that couldn't help but make you feel annoyed. The first thing is about the head of the Rie family. At first you thought that the head of the Rie family was only one person, but the Rie family is actually different because there are two heads. The second thing is that you don't know what their System is because they have never used their abilities in front of you.

Dressed in a servant's uniform, you slowly open the door to your room which is the residence in the Rie family's mansion for servant. Just before opening the door, there no one outside. But when the door closes, you quickly sense the presence of someone's breath in the hallway.

Unable to let your guard down, you immediately turn around to locate that person and when you do that, you only see Curtis and Philips are standing by the wall in the darkness. The twins seemed to be waiting for someone or more accurately, they are waiting you. Before you could say anything, Philips interrupts you, stealing the opportunity to speak.

"Look what we have here. It seems that after three years of pretending to be a servant, our little assassin has finally decided to take action and assassinate us tonight."

Philips speaks with a taunting and provocative tone, implying that he and his older brother had discovered your true identity from the very beginning.

Noticing the lack of seriousness from his younger brother, Curtis, who had remained silent, finally speaks up.

"If that's the case, we cannot let this assassin survive and leave here without leaving life back."