one day, a high school student name alpha, walking his way back home after buying books for his book collection and bumped to another high school student around his age, named Caine they have a talk and became best freidns after a week.
--until one day, while they're on their way back home, alpha stepped on a kitchen knife, alpha's thouts made him stabbed a building wall nea by and surprisingly it opened up a portal to another world.
-the rest is their story