When Did I Become An Artifact Dealer?!

A teenage student, Cail, finds his ordinary life upended by a mistaken delivery. Expecting sought-after sneakers, he instead receives a malodorous package containing a box filled with strange, ancient trinkets. He dismisses these peculiar items—a broken compass, an unusual ring, an old coin—as mere oddities and quickly sells them to recoup his initial disappointment, as he was simply a student seeking to recover his funds. However, this swift sale unleashes unforeseen consequences. Mysterious, cloaked individuals begin to emerge, urgently demanding the return of these "artifacts," a stark contrast to Cail's everyday existence. To his amazement, the enigmatic box inexplicably replenishes itself, providing an unending stream of unusual objects. This chain of events plunges him into a clandestine realm of arcane treasures and perilous transactions.