I really admire writers of parallel world and time travel stories because it takes a lot of imagination and logic for the story to make sense.

I like this story well enough, the idol ML had an accident on the night of the comet in 2019. He travelled back to 2017 and tried to become an idol again. After 2 years he met his other self in the parallel world who has been unlucky since 2017. He realized that his other self was not able to get opportunities to become him in 2019 because of his arrival in the new world. Also, that the original world was 2 years older than the new world. He tried to help his other self become popular also before the night of the comet and readied himself to return to the original world since the 2 him could probably not co-exist in the future. However during this time he met and fell in love with the FL and was not sure if he wanted to go back to the original world.

The acting was good enough but a bit bland. I wished there was more character similarities in the ML and his other self because they were too different. The chemistry between the two leads was also not that strong even during tropey situations. Maybe it's because I felt that the FL is too subservient to the ML even if ML was a really good person.

The ending was logical so I liked this well enough but would probably not rewatch.