In the realm of Astraea, Yuuki awakens with no memory of his past beyond his own name. He is soon discovered by Kokkoro, an elf who volunteers to serve as his guide in this unfamiliar land. With Kokkoro's help, Yuuki learns the basics of Astraea's systems, including combat and currency.
To fund their journey, Yuuki and Kokkoro take on a simple assignment from a local guild. During their travels, they encounter Pecorine, a cheerful yet ravenous fighter. The following day, they meet Karyl, a magic user who resembles a cat girl.
Over time, Yuuki, Kokkoro, Pecorine, and Karyl forge a deep friendship. They decide to establish their own guild. Together, they embark on countless quests, exploring the world and perhaps uncovering the mystery of Yuuki's lost memories.