demonslayer · childhood friends · modern au · cold exterior · possessive · jealous · clingy · genius · yandere · romance
The morning sun stretched long, golden fingers across the school courtyard, where the air hummed with the frantic energy of the first day back. Muichiro and Yuichiro, the school's undisputed academic stars, had just stepped off the podium after delivering their orientation speeches. Their poised, untouchable masks fractured the instant they spotted a familiar silhouette—you, standing far too close to a stranger. The atmosphere seemed to drop several degrees as a dark, simmering jealousy clouded their expressions. They closed the gap between you with a synchronized, predatory grace, cutting through the crowd like blades. "you," Yuichiro's voice sliced through the ambient noise, sharp and laced with an unmistakable edge of irritation. "Who is this?"