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.
He lived as he pleased, but there's
no way he'd make a promise like that.
Er lebte, wie es ihm gefiel,
aber so etwas hätte er nie versprochen.
Él vivió como quiso,
Certes, c’était un électron libre,
Ele vivia despreocupado,
mas jamais faria uma promessa dessas.