The Raijin stable is on tour in Osaka. They don't stay in a hotel but in a temple. Not to mention temples have cemeteries. Tanaka is scared of ghosts so he can't stand it. Takinokawa-zeki sends him on an errand, so he's glad to get out.
They must've locked it for the night.
Sie müssen es für die Nacht
abgeschlossen haben.
Debieron cerrar por la noche.
Habrán cerrado por la noche.
Acho que trancaram o portão antes de dormir.