Escape from Another World

Story:

Kim Seo-jun is a recent college graduate leading a typical existence. He experiences something akin to an online novel or webtoon, where he finds himself in an alternate fantasy universe. For a while, he is thrilled that he is now the main character, but then a royal murder case plays out in front of him, and Kim Seo-jun is set up as the murderer. Kim Seo-jun is consequently imprisoned in Gehenna, a jail in a different universe. Can he really get out of this world?