Insanity Without Pain

Mori Natui was having a bad day. His parents had gotten into a car accident leading them to their deaths, and he had to attend their funeral, but they are out of town in a different Zone, so he needed to take a plane. Mori never had a good relationship with his parents, and he would've never gone if his childhood hadn't kept pestering him to come with her. Mori had made his mind after a week and booked a ticket, but before he left he had to inform his girlfriend about his departure, but he had seen something that was totally unexpected but wasn't all that surprised… Making his day even worse, during his flight, some type of portal appeared out of nowhere….