The heart of every living being hardens and remains after the body dies. One day, the traveling merchant Faris found a girl who had collapsed in the desert and took her under his care. The girl, who introduced herself as Eva, was told by Faris about their current location, the oasis city 'Aurof,' and he took her to the town to show her around. As they walked through the merchant city lined with villas, Eva gradually began to open up to Faris and confessed, "I ran away from that house." Thus begins the story of a girl carrying a forbidden secret. その日、行商人のファリスは行き倒れた少女を砂漠で見つけ保護した。 エヴァと名乗ったその少女に、ファリスは現在地であるオアシス都市「アウロフ」のことを教えるため、彼女を街へと連れ出す。 ヴィラが立ち並ぶ行商の街を歩きながら、ファリスに少しずつ気を許したエヴァは「私、あの家から逃げて来たんだ」と告げて――。 これは、後悔を紐解く物語。