Spy Classroom Short Story Collection, Vol. 2 (light novel)

Klaus is you.

Before her death, Hearth, the leader of the legendary spy team Inferno, bequeathed a key of unknown purpose to Thea after saving her from the brink of despair. Years later, Thea has finally discovered a box the key can open. Inside, she finds Hearth's last testament, but it’s missing a crucial word. Soon, misunderstanding begets misunderstanding as everyone in Lamplight gets sucked into uncovering the mystery of Hearth’s note!

This captivating tale is explored in Spy Classroom Short Story Collection, Vol. 2 (light novel) by Nathaniel Thrasher, Takemachi Takemachi, and Tomari Takemachi. Dive into this enthralling continuation as the characters piece together the puzzle left behind by the legendary spy.