The Deadly Countdown - Ch. 4 - Does he have to die?

[MangaDex]

 

[7Lotus]

So the mc can only delay a person's death but not prevent it

 

[BusterKitten]

Hat's off to the artist. They know how to build up tension by utilizing the long strip format

 

[ItsHanabi]

Randomly came across this. Looks good!