Continuity mistake: I know that Animators re-use backgrounds but it is painfully obvious that when Keitaro and Narusegawa are leaving the exam results posting they walk in a straight line past the same "Ristorante" three times.
The Hinata's New Resident Shinobu: Arrow Signs - S1-E2
Trivia: In the original comic version, Shinobu was already a resident of Hinata Inn.