Young Japanese law student; Kanzaki Daigami is cast into another world where a prestigious organization is broiled in an unforgiving and unrelenting civil war!
The only way to get back home is to achieve his destiny of becoming The Gatekeeper of Memories with the help of his friends Shikyo Yoshikawa and Treyton Bellegale.
Together, they will try to put an end to the conflict by collecting Memento Shards to restore The Grand Gateway which transported Kanzaki to this world in the first place.
Or, after all that will happen, will he even want to?
After passing a mock trial, and enjoying a wonderful, sunny, warm, hazy, walk home, Kanzaki hears a desperate cry for help! With the heroic civil duty to protect his fellow Japanese citizens, he runs to the rescue! Only to be offered and treated to ... lunch?