In a place, there is a place called the world within the walls. A girl with amnesia in the name of an angel entered this world when she was lost. In order to find her companions and solve the mystery of the giant. She and her friends came outside the wall, and in that world, they bravely entered the Hell Tower, the time and space gate of the Undersea Valley, and accidentally traveled to another dimension...
"I just... Want to find my companions and the people I like and spend my life in an ordinary way."
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.