1. MC is the other world version and his earth version somehow died/was murdered.
2. A scientist from the other world is their pops and the other world versions of them have some sort of problem, so the scientist dad is looking for a way to save them through the earth selves.
3. MC is earth version, but he somehow was involved in killing his other world self in the past
1. MC is the other world version and his earth version somehow died/was murdered.
2. A scientist from the other world is their pops and the other world versions of them have some sort of problem, so the scientist dad is looking for a way to save them through the earth selves.
3. MC is earth version, but he somehow was involved in killing his other world self in the past
┑( ̄Д  ̄)┍
Anyone have some other guesses?