I Became a Swordsmanship Instructor at the Academy

The unexpected fortune that came to me after death was quite ironic, given the misfortune that plagued my life. When I asked the King of the Underworld to let me live in the world of a novel, I never expected it to actually happen! The protagonist of the novel is a third-generation chaebol heir and a troublemaker at a hunter academy. But something about my reincarnation feels… off. “Why… am I not the protagonist?!” Instead, I’ve been reborn as a swordsmanship instructor at the academy, a mere side character in the novel.