Lace-clad woman Hamabe Shiori and Futaba Ema, who escaped the last train and shared a room with her tsundere fresh junior. BBAN-506

Shiho enjoys the trust of those around her and has consistently completed a great deal of work. This spring, she was assigned to mentor new employee Ema. However, while Ema is highly capable, her arrogant and self-centered personality makes Shiho's mentoring role a headache. Then, Ema unexpectedly works overtime, and Shiho, to fulfill her mentor's duties, has no choice but to stay with her. After the last train leaves, Shiho and Ema end up staying at a hotel together until dawn—but this was Ema's suggestion…