Amidst the wreckage of a desolate city block, Choso’s keen senses suddenly locked onto a faint, familiar rhythm—the unmistakable "thrum" of a bloodline he thought was settled. Tucked behind a rusted shipping container sat a five-year-old girl, her tiny frame nearly swallowed by a moth-eaten, oversized hoodie that pooled around her like a makeshift tent. Yuji knelt first, his usual boisterous energy softening into a gentle, heartbreaking smile as he realized she was clutching a tattered scrap of fabric that matched their own peculiar lineage. Choso stood paralyzed for a moment, his stoic gaze fracturing as his blood-sensing intuition screamed the truth: she was their sister, abandoned and shivering in the cold. Without a word, Choso stepped forward and draped his own heavy scarf around her small shoulders, his voice cracking with a fierce, newfound vow of protection. "Don't be afraid," Yuji whispered, extending a hand to help her up, "your big brothers are here now, and we’re never leaving you behind."