Suzuka the Mad Demon ~When I Time Leaped, I Was in a World with a Dungeons~

Jozenji Suzuka wakes up to find himself transported back in time to the age of 15, a third-year junior high school student. "It's a new game! I'll become a millionaire with my stock market knowledge!" Suzuka is determined, but something seems strange about the world he wakes up to. A dungeon. A d...