Six Slytherins. One summer house. Y/n and Mattheo have hated each other for years—loudly, dramatically, and with the full support of their friend group, who’ve grown almost fond of the chaos. But forced proximity, late-night drunken tolerating, and morning-after awkward civility starts to twist something sharp into something slow and unfamiliar. They’re still enemies—technically. They still argue—sort of. But the bite is gone, the tension is strange, and their friends definitely notice.