On her way to school, Aoi, who can see ayakashi, encounters an ayakashi she's never seen and is abducted to Tenjin-ya, an inn in the hidden realm. There, she learns that her grandfather promised that she'd marry the master innkeeper to pay off his debt.
Wh-Who's there?!
W-Wer ist da?
¿Quién anda ahí?
Qui es-tu ?
Quem está aí?