Recommendations

Both involves the plot of reunited best friends from school with one of them avoiding the other due to a past crush.

The same male lead actor Ji Sung :) In both dramas he's a medical doctor in a hospital. Both hospitals have politics drama and moral discussions. Both are about patient's stories and doctor's lives and a love story too.

I never thought I would find a show on the same wavelength of TDJ, yet here we are! I could not stop thinking about how similar these two shows are while still retaining both their uniqueness. First of all, the story, the themes and the context are quite similar, they both aim at making you question the relationship between ethics, morality and the law, however, they will also denounce some of the cruelest and messed up aspects of our society, and it will sting. Then the characters: the protagonists are both considered unlawful/cruel/corrupted despite working as representatives of the law, yet through their questionable methods they are able to reach the fairest/rightful outcome, they also both have past secrets and family issues! The co-protagonists are both young guys who are initially suspicious of the main lead and interfere with his work, but they slowly understand each other and end up co-operating. I can’t say anything else about the development of the story because Sins of Kujo has not been completely adapted yet (and I haven’t read the original source), therefore I can’t say for sure whether it’s going to go a different route than TDJ. I would also say TDJ is set in a way more dystopian universe compared to SoK, which, on the other hand, seems to paint a more realistic image of modern Japan and what being a lawyer actually involves behind the scenes. That said, I loved both of them so much, truly among my top favorites.

Both dramas have the oozing chemistry between the leads. Not to add, the older female and younger male troupe will certainly caught everyone's attention, and feels. Also, these dramas don't particularly involved a lot of nonsensical scenes, and totally just lighthearted througout the episodes.

Group of friends
Go to places to find stone or power
Strong Fl and ML
Each place to find power has sad story behind it

Watching Veil of Shadows made me remind of Moonlight Mystique

The Must-Watch Continuation of Tang San’s Journey
"If you’ve just finished the first part of the Douluo Continent and are wondering where the story goes next, The Land of Warriors (Soul Land 2) is exactly what you’re looking for.
The story picks up exactly where it left off: right after Tang Hao rescues Tang San and Xiao Wu from Bibi Dong at the Spirit Hall tournament. While the series features an entirely different cast, it faithfully follows the next chapter of Tang San’s journey as he begins his intense training under his father.

Night Traveler and Chicago Typewriter share a strikingly similar narrative core, as both dramas use a dual-timeline structure to bridge the modern day with the high-stakes 1930s era of colonial Korea. While Chicago Typewriter uses reincarnation to connect three resistance fighters to their modern counterparts, Night Traveler employs a time-slip mechanic where a modern apartment physically transforms into its 1937 version every night, allowing a modern forensic investigator to meet a principled lawyer from the past. Both series blend fated romance with thriller and mystery elements, as characters in both timelines must uncover long-buried secrets and navigate the political dangers of the past to understand their present-day connection. This combination of period-piece aesthetics, fated bonds across time, and an underlying investigation into fated history makes them spiritual successors in the niche genre of historical-supernatural romance.

Both follow mythical fox creatures (demon or spirit), with concepts of fantasy and fighting all the same. Includes a legendary cast as well, and second-lead couple stories!! One thing to note, fox spirit matchmaker has multiple dramas in the same universe, sort of continuing the story (in way).

Both dramas have morally grey characters, a villainous female lead, a heavy focus on the entertainment industry, and they also both explore how far one would go to achieve their own ambitions/desires.

Though the plots are quite different, the special effects are top tier in both dramas. The monster parade is high-definition, diverse and entertaining. Both dramas also use an innocent-hero type of ML.

AFA is more supernatural and mythology-linked, SH is true horror with a scifi bent.

Seconding the ONHCT rec - these are both Taiwanese dramas with a supernatural story. There are elements of Chinese myths throughout. Both dramas involve reluctant but decisive MLs, who have simple souls but also very strong moral compassess. In both cases, the plot is strong and the special effects are good and support the story.

It looks like if SK has the knack of horror dramas, Taiwan is sure getting ahead when it's about supernatural.

Both shows show a case of an individual loosing their mind living at a Goshiwon (Residency). In Trigger, this only applies to the first criminal case in the show (roughly 2-3 episodes), whilst Strangers from Hell delves into this storyline as a whole.

During this time, both MCs in that case share the same values, emotional outbursts and mental instability. Both MCs have an influencing figure grooming them into commiting criminal acts.

Both shows tackle the subject of preventing or succumbing of these sociopathic tendencies to kill others. Trigger focuses more on the preventing side whilst Strangers of Hell focuses on succuming to that nature. Both shows are quite alike, crime, thriller and psychological. Two sides of the same coin.

Sci-fi comedic mysteries.
Both about female lead being coworkers with an alien.
Hotel business vs kitchen setting.

The core concept of both series involves communication between characters from different points in time. In Kairos, the male protagonist lived three months ahead of the female lead, using a cell phone for their interactions. Time Rescue follows a comparable storyline, but with a time gap of 12 days, utilizing a lantern for their exchanges.

Both FLs are powerful and immortal, MLs are human. Both SMLs have a long time obsessive love for the FL. Both are xianxias with a similar vibe.