Unstoppable

Mains loved one is kidnapped ! Both mains come from a mysterious background taking revenge on those who betrayed them.

A retired hitman/gangster who both live a quiet normal life, then start to show off their skill again to save someone they love who has been kidnapped

A ordinary MC with a mysterious past on the hunt for people that have kidnapped their loved ones, in No mercy's case a sister and Unstopabble his wife. A must watch if you liked either show.