Red heads for a mountain range called the Wall at the World's End with his lover Rit and sister Ruti. It was supposed to be an easy trip to get materials for an engagement ring to give to Rit, but...

It's morning as usual. Ruti reconsiders her ordinary daily life that she had abandoned as a hero. That morning, Tisse seemed to be acting strangely. Ruti tries to ask her about the previous night, but...