This is the 2013 Korean action/thriller/romance/crime drama series. Its native title is "무정도시" which translates to the English title, but has also been translated as "Cruel City" which is an alternate title. It's also called "Undercover." From MyDramaList: https://mydramalist.com/6719-cruel-city "It portrays the cruel life of the drug cartels and the story of revenge for a loved one. Jung Shi-hyun is a newly-appointed underboss called 'Doctor's Son' of the drug cartel. He lives in the shadows. No one knows his true name or identity except the ones he calls friends. When he's accused of murder, he's determined to find out who really killed the girlfriend of Ji Hyung-min. But is it really only for himself? Or does he have another reason to find out who killed her? Ji Hyung-min is a detective who is seeking revenge for the death of his girlfriend. He only has one suspect in mind: Doctor's Son. He's determined to catch him and kill him for what he has done. But no one knows what Doctor's Son looks like or any details about him, so how is he supposed to know who he is and how to find him? He proceeds on a long journey to fight for justice." IMDB: https://www.imdb.com/title/tt3089614 AsianWiki: https://asianwiki.com/Heartless_City These all have edited "soft" English captions; that is, English subtitles are part of the MKV files and the subtitles can be enabled or disabled as you wish. I downloaded the source videos like "Heartless.City.E01.1080p.WEB-DL.H264.AAC-AppleTor.mp4" and English subtitles like 'Heartless.City.E01.720p.WEB-DL.x265.10Bit-Pahe.srt', then... - Used a nonlinear video editor to trim out short repeating sections (from commercial breaks) in some episodes - Used Subtitle Edit (by Nikolaj Lynge Olsson) to find and fix all flagged issues - Added 0.7 second to each subtitle (where possible) to allow more time to read them and adjusted words/minute to at least 280 - "Softened" all subtitled profanity (bastard --> jerk, damn --> darn, bitch --> witch etc.) - Corrected commonly-found typos, converted many word pairs into common English contractions, and brought together sentence fragments - Colored all media, signs, and flashback subtitles to salmon, yellow, and teal respectively - Used Handbrake to create new MKV files using my subtitles "Profanity is the parlance of the fool. Why curse when there is such a magnificent language with which to discourse?" - Theodore Roosevelt Number of episodes: 20 Episode lengths: 56 to 62 minutes each Total duration: 19 hours, 34 minutes, 11 seconds Total file sizes: 22.4 GB (24,088 MB) Overall bitrate: 2728 Kbps Video format: MKV Video Codec: H264 - MPEG-4 AVC (part 10) (avc1) Video bitrate: 2700 Kbps (2-pass) Video width: 1920 pixels Video height: 1080 pixels Video frame rate: 29.970 fps Video decoded format: Planar 4:2:0 YUV Video scan type: Progressive Audio format: MPEG AAC Audio (mp4a) Audio language: Korean Audio bitrate mode: Constant Audio bitrate: 128 Kbps Audio channel(s): 2 Audio sampling rate: 48 KHz Subtitles: English as soft captions - feel free to rip & use or distribute as you wish