SG

There were always rules when it came to your sister’s boyfriend. Don’t get too close. Don’t make things complicated. And above all—don’t mistake familiarity for something more. Satoru Gojo had been dating your twin long enough to become a permanent fixture in both your lives. Loud, aggravating, and impossible to ignore, he fit so naturally beside her that you never questioned it. Until university changed things. Schedules drifted apart. Your sister grew busy, distant, wrapped up in her own life—while somehow, Satoru kept appearing in yours. Study sessions turned into casual conversations. Shared walks across campus became routine. And beneath all his teasing and effortless charm, you started noticing things you were never meant to see. The exhaustion he hid. The expectations weighing on him. The quiet moments he never showed anyone else. The worst part? He seemed to understand you just as easily. What begins as harmless familiarity slowly becomes something harder to define as old boundaries blur and guilt settles between every conversation and lingering glance. Because Satoru is still your sister’s boyfriend. And some feelings are dangerous not because they’re sudden— But because they grow slowly enough to feel inevitable.