First days are always perfect. Especially when they entail being chased down in corridors by flesh-eating monsters. You thought joining the eccentric staff at Trost State High School as their new English teacher was as eventful as it could get. But then the grumpy janitor pulled out a machete. And you realise that fighting alongside him for the lives of your bizarre coworkers and delinquent students truly is as perfect a day as it's going to get. Janitor Levi x Female Reader, AOT High School Caste AU, Reluctant Allies to Lovers [All of Us are Dead AU]