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.
This is based on the promise
that Shiro--your grandfather--and I made.
Ich beziehe mich auf das Versprechen
zwischen Shirō, deinem Großvater, und mir.
Ça vient de Shirô.
Isso se baseia em uma promessa
que o seu avô Shiro e eu fizemos.