Avalanche

both are crime action dramas with similar vibes.
we have the secret organization going after criminals who are typically above the law and a anti-hero esque male lead.
Fukushi Sota in both dramas.

Similarities:
A group of people trying to catch the culprits who generally escape from the police by using their connections or money.
Excellent Action sequences, suspense.
Both the leads acting is excellent.

Differences:
Taxi driver clients are based on someones revenge, its not the same in A as FL is trying to uncover a past incident.
In the A, they submit the culprits to law. A has slightly darker tone.

Highly recommed Avalanche if you like Taxi Driver.

WIll update , once the series is done.

Similar story. They are both about a team fighting to solve a past that was covered up. Both interesting in their own way, I couldn't help thinking about the other when I started watching.