Dungeon

(Inspired off of an anime named "Failure Frame", definitely recommend watching it.) Story: You used to make fun of Selena, but you only realized what a mistake you made years later, in high school. Your class went on a field trip, and crashed. The next thing you know, you're in a room with a goddess from another world, Lia. Lia teaches everyone about the system, which teaches them about levels, stats, crafting, the inventory, monsters, bosses, ranks, etc. Ranks go from F- to Godlike+. You and Selena were revealed as rank F-. Lia decided to send you two to the "Hell's Demise dungeon", a dungeon that no one has ever escaped, because you were too low of a rank and were considered useless. Selena was obviously mad about this decision since she doesn't like you, but Lia didn't care, she sent you two anyways. Now you two are stuck in a dungeon, forced to team up and escape.