Heya, I'm trying to find a transmigration/isekai style novel i read a long time ago, the main character is transported to the new world right at the end of a major dungeon and thus completes it becoming OP. he makes friends with a dragon and thats all i remember.... thanks in advance!
From what I remember the mc is transported to the new world and arrives right before the doors at the end of the labyrinth/dungeon, he hears the boss approaching so he runs through the doors and completes the dungeon, gains heaps of levels stats etc andb ecomes op.