It was really tough for me to get through the first couple of episodes due to the unrealistic nature of it all. I'm not referring to the time travel plot, but rather the fight/chase scenes. There are scenes where the main characters are being chased by dozens of agents, all armed with guns. You would think that these trained individuals in a secret organization would at least be able to aim, but the main characters have strong plot armor and dodge all the bullets. Even if all the agents are bad shots, the sheer quantity of bullets should at least make the main characters a little more careful. But these chase scenes in the first couple of episodes are full of the main characters running without cover, magically dodging bullets. Especially the car chase scene with the drones, these drones were firing dozens of bullets in mere seconds at the car, and minimal damage was done. The car wasn't really doing any evasive driving, it was an easy target. Yet, the bullets don't hit any person, don't hit a tire, they do nothing. We have to wait until the very end of episode 4 for a single bullet to hit the FL's arm.

It was hard for me to enjoy this drama due to the lack of realism and lack of immersion into the drama, ironically not from the time travel plot, but from the poorly executed fight/chase scenes.