The Devil Is a Part-Timer!, manga Vol. 15

It's well past the time when Emi should've returned from Ente Isla-but Maou's too obsessed with passing his driving test and becoming a MgRonald deliveryman to dwell on her for long. His attitude is quick to change when he runs into a suspicious pair at the test center...just as events take a drastic turn at Chiho's school! Can the Devil King keep the peace in Sasazuka without the Hero around?