The The Devil Is a Part-Timer!, Vol. 8 (light novel) — Satoshi Wagahara

Emi's going to Ente Isla with Alas Ramus! Still in Japan, Maou decides to get his driver's license for his work at MgRonald, but he can't help worrying when the Emi's return date passes without her arrival. After his apprehension causes him to bomb his exam, the Devil King meets a strange pair strangely unsuited to Japan... Could they know something about Emi?!