Zero (2022)

Timeline Changes but communication through a Walkie Talkie
Thriller/Mystery
Serial Killer on the loose from the past
it will give you the vibes of what will happen next if the timeline changes

Timeline Changes from 1988 to 2017
Thriller/Mystery
Serial Killer on the loose from the past to catch in the future
it will give you the vibes of what will happen next if the timeline changes

Timeline Changes from 2018 to 1985
Thriller/Mystery
Serial Killer on the loose from the past to catch in the future
it will give you the vibes of what will happen next if the timeline changes

I recommend this both drama because , Male lead and Female lead
try to solve problem
In one drama explosion and another student murder/suicide