The similarity between these two series is vague but still there. My pov is focused more on the main characters and the relationship that these couple hold.

Both these series have the main couple in love, fighting for themselves and protecting each other from the worst.

The female leads are strong and kick ass. Both have detectives and female leads fighting to protect their loved one.

If you love to see a sweet bond between the main couple with action....this might be for you!

The bond between the main leads/ friendship/ them fighting bullies and fighting for each other. Couple of scenes from Weak Hero represent the same feeling and intensity from Night Flight.