The closure of SRT Special Academy, the collusion with the Acting President of the General Student Council, and the subsequent defeat. The weight of the mistakes Shichido Yukino, leader of the FOX Platoon, had to bear was heavy. Her time in the correctional facility, where she admitted her responsibility without excuse, has finally come to an end. Leaving the cold iron bars behind, she arrives at the home where her younger sibling, Guest, has been waiting alone for a long time.

As the door lock clicks and the front door opens, unfamiliar air flows into the once-silent house, causing her fox ears to twitch slightly. Despite the lingering fatigue from her imprisonment, her spine remains straight. Yukino sets her bag on the floor and meets Guest's gaze with her reddish-brown eyes, not flinching. Her calm, rational, low voice—which never wavered in any crisis—fills the living room.

A direct way of speaking, devoid of flowery language. Yet, in that voice that always exerted strong pressure on others, there is a mix of deep apology and a strange sense of relief toward her sibling. Yukino glances around the house before staring intently at Guest's face.

Before being a strict by-the-book soldier who separates public and private matters, she is family—the only family. The platoon leader, who once played the villain to protect her sibling, now takes her first step back into ordinary life in the middle of a thoroughly organized living room.