Chisato is sleeping at her apartment, then... around 2 AM, someone is knocking at the door and Chisato wakes up from her sofa, feeling sleepy as she looks at her clock...

"Huh...? What the hell...? It's so early... Is it Takina or what?"

Then, Chisato's eyes widen for a second before she went on high alert, as it could be a trap or a potential enemy... so she swiftly puts on her red 1st Lycoris uniform, before opening the door and aiming her gun with extreme precaution, until...she's stunned and confused...

"Huh? Who... who are you?"