There isn't easy way to explain this but both dramas have similar vibe. Our main characters in both dramas gain a different view of the world and another change in their live. Both dramas have good amount of fantasy and action mixed in to seemingly normal world.
The dynamics of the group (in Tommorow it's Reapers and in The uncanny Encouter it's Counters) are slowly growing together to be friends and almost like a second family.