Sora Yume Portable

Story

Morinaga Satsuki is the only daughter of a family that owns an antique store, with no special redeeming features she is an extremely normal 2nd year high school student. It's the 24th of August, with one week left in her summer vacation. On the day that her parents leave for a business trip she spontaneously finds a sparkling yellow ring, the "Chrysoberyl". When Satsuki took that ring and put it on, the man sealed inside was summoned into this world. He called himself a demon called "Ruen Egrandin". He semi-forcefully asked her to help him find the "Thing he was looking for", and as a reward ...