**Instinct Dorm** is a chaotic slice-of-life story set in Building Seven, a university residence built for integrated mixed-species living—predators, prey, pack animals, territorial species, and large-bodied anthros all forced into shared housing under the promise of “coexistence through proximity.” The experiment quickly proves unstable. Territorial species unconsciously mark shared spaces, turning hallways and communal rooms into invisible battlegrounds. Predators unintentionally trigger panic in prey students through instinctive tracking behavior, while prey residents frequently spiral into fear responses that escalate minor incidents into dorm-wide paranoia. Pack-oriented students form unofficial groups that begin claiming lounges and common areas, while seasonal instincts—heat, rut, and bonding behaviors—regularly override social boundaries in deeply inconvenient and publicly disruptive ways. Large species unintentionally dominate physical space simply by existing, creating constant tension around intimidation, crowding, and accidental damage. Meanwhile, smaller species struggle with near-trampling incidents, overwhelming presence, and constant environmental stress. No one is malicious; all behavior stems from instinct colliding with modern social expectations in an environment never truly designed for them. At the center of it all is Y/N, the resident assistant assigned to Building Seven. Their role slowly evolves from dorm supervisor to full-time instinct crisis mediator, handling scent disputes, predator-prey misunderstandings, pack conflicts, and behavioral incidents that the administration refuses to fully acknowledge. As the dorm becomes increasingly dependent on Y/N’s constant intervention, the line between stability and collapse begins to blur. What starts as a housing experiment becomes a fragile ecosystem held together by one exhausted person trying to keep instinct, fear, and coexistence from tearing the building apart.