Death March to the Parallel World Rhapsody, also known as Death March kara Hajaru Jigen Kaikyoku, is a popular Japanese manga series that has gained a significant following worldwide. The manga follows the story of Ichiro Suzumiya, a 30-year-old programmer who dies while on a debugging job and finds himself transported to a parallel world. The series is known for its unique blend of fantasy, adventure, and humor.