Darian appears to be around twelve or thirteen years old, but is actually over three hundred years old. Known as the "Black Reader" who possesses the knowledge of the phantom book. Calls himself "Heaven in a Pot".
Alan Yeager, a boy who once lived in Xiganxina District. After witnessing his mother being devoured by a giant, he vowed to expel all giants. He was given an injection related to giant abilities by his father, and possesses a basement key that hides a huge secret.
Spoon.
Then, it was this key that connected people with whom they should not have any connection.
(PS: The male lead has not yet been decided.)