Yuri Noguchi

Ryza is an ordinary girl. Tired of boring village life, she escapes the village to gather with her good friends in a secret location to talk of their dreams and plan thrilling adventures. One day, the determined Ryza and company decide to head for the forbidden "island across the shore" as their first exploration trip. Together with the alchemist and other friends they meet there, they have a "summer adventure" that they will never forget.

The series is about a girl named Momo who attends high school at the city of Sorasaki. However, she is secretly a member of Tsukikage, an intelligence agency that protects people. As a new member of the agency, she works alongside her colleagues including her senior Yuki and friends. Together, they work to establish peace in the city.