The idea is taken from a Korean novel called 12 hours after (You can find in Webnovel). I don't really mind it even though some of the events are also copied .
What I disliked about this novel - the same old CN cliché . Why? ? ....Offcourse author can write it acc. to his wish , u don't have to follow the plot of 12 hours. ..but u copied events ,added face slapping & cliche plot in between ....