Both dramas are about wives who have to start over because of a dead rich husband or a cheating one.
In Rose War Gu Nian's husband, Song Jia Chen, is a successful lawyer and their family of three lived happily. However, everything changes when Song Jia Chen was not only embroiled in a crime but also caught cheating on her. Gu Nian finds work at a law firm through Feng Sheng's referral and attempts to start over.

Another twisted and not very well outlined plotlines or storylines ... both have weak female leads , who lead on their counterparts and just twisted and messy all around.

Both are set in sort of the same time period -- minus the time travel aspect but both deal with crimes and criming solving within a certain period of time when policing wasn't so cut and dry or as cemented as it is today

Both are set in sort of the same time period -- minus the time travel aspect but both deal with crimes and criming solving within a certain period of time when policing wasn't so cut and dry or as cemented as it is today

Both have some kind of genetic mutation kind of feel to them and both feature the same Female Lead with a few differences.

Both international -- feature American and Japanese actors, with Shogun featuring other nationalities as well.
Shogun: Set in Japan in the year 1600, Lord Yoshii Toranaga is fighting for his life as his enemies on the Council of Regents unite against him, when a mysterious European ship is found marooned in a nearby fishing village.

Tokyo Vice: An American Reporter on the Police Beat in Japan is a 2009 memoir by Jake Adelstein of his years living in Tokyo as the first non-Japanese reporter working for one of Japan's largest newspapers, Yomiuri Shimbun.[1][2] It was published by Random House and Pantheon Books.[3] HBO adapted the memoir into a 2022 television series. According to Gavin J. Blair of The Hollywood Reporter, there were individuals that disputed whether certain events in the book happened as stated.[4]

Similiar in that they are both international with American actors -- both feature Japanese and American actors.
Shogun is Set in Japan in the year 1600, Lord Yoshii Toranaga is fighting for his life as his enemies on the Council of Regents unite against him, when a mysterious European ship is found marooned in a nearby fishing village.

Tokyo Vice is set in 1999, American journalist Jake Adelstein has relocated to Tokyo and must pass a written exam in Japanese to have the chance to join the staff of a major Japanese newspaper. He succeeds in becoming their first foreign-born journalist and starts at the very bottom. Taken under the wing of a veteran detective in the vice squad, he starts to explore the dark and dangerous world of the Japanese yakuza whilst living under the city's official line that "murder does not happen in Tokyo".

Both have the same level of mystery and twists within the Police Force. Both are stories of detectives chasing after the truth behind an unsolved crime, that took place in the past, through cases that take place in the present.

Same as Samayou Yaiba, Juvenile Justice brings to light how the Law views/treats juveniles under twenty who commit very serious crimes and understandable so since it wants to give them the opportunity to learn from their mistakes and rehabilitate them but not all cases are the same and not all crimes are the same. And these tow dramas looks at the very exceptional cases, the victims of these cases and how the families are impacted.

Similar story of a female lead working in a male dominant environment with a cheating husband -- depicts the scandalous scandals of the nation's top law-abiding aristocrats dreaming of hereditary succession.

Similiar to The Cursed as it deals with evil spirits. Priest is a story about doctors and exorcists protecting people together at a Catholic hospital in Seoul.

Both dramas have terminal illness -- leads who feel life has forsaken them but in the process of trying to accept their fate they find ou that life is worth living even if for a moment