I came, I saw, I lost! (Classroom of the Elite Fanfiction)

Upon her disappearance, Ajimu Najimi gifts Kumagawa Misogi with one final prank, which unexpectedly sends him into another dimension. Along with this, she leaves him a set of instructions on how to return to his own world. 『Graduate without getting expelled?』 Is that even possible for someone like him? — Description from novelcodex.org