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.
When that happens, offer 
them some food first.
Cuando eso ocurra,
ofréceles un poco de comida primero.
C’est pourquoi mieux vaut
leur offrir à manger.
Quando isso acontecer,
ofereça um pouco de comida primeiro.