When Zon changes the school he teaches in, he doesn't expect his old boyfriend to work there too. He and Saifah didn't see each other for years, so when they finally do, it's definitely more than awkward, especially that the old feelings are still there. But as they say, "never let an old flame burn you twice". Or at least that's what Zon believed in before. Teacher x Teacher AU mixed with Old Flame trope, but more awkward than angsty.