My Personal Weatherman

Both portray a submissive-dominant, master/servant relationship. The leads from both shows are flawed individuals who are not great at communicating their feelings to each other.

Hiro's so stressed out at work that he can barely have proper meals or get some well-earned sleep. When he passes out on the sidewalk after yet another stressful day, an unfamiliar face calls out to him - apparently, they once promised to marry each other? What's Kai Fukaya's deal, and why is he so insistent on assuming the role of Hiro's fiancé?

My personal weathermen main lead and The journey to killing you are both addicts to there lover. And both story toxic

Both are BL dramas with a dominant/submissive relationship between the 2 main characters. Both have rain as a motif in the series.

Overall, the two are simple similar due to the fact that they both have a male lead who draws adult webtoons/ manga, and a male lead who is jealous.

Both has Toxic relationship, lack of communication at some part but good chemistry. Everyone being obsessed on the lead, etc

Kanade Shinichiro, a working adult living in Tokyo, has decided to hide his homosexuality and never fall in love again due to bitter memories from his school days. One day, he reunites with his high school best friend, Mashiro Kosuke, who he once had a "special" crush on. After meeting for the first time in six years, the two face their pasts and begin to move forward while re-examining themselves. A heartwarming boys' love story about two people who sometimes hurt each other but also clumsily love each other.

Arranged relationship, blurring the lines.
Popular handsome man and weather forecaster Segasaki is actually a tyrant at home. Yoh, an ero-manga artist in a tight spot knows this very well. This is because the two of them are living together. More than that, it's because he cooks and cleans for Segasaki! To no surprise, in exchange for being provided food, he must "obey everything that Segasaki says". What comes from such a contract is?

i) both are Japanese
ii) involves weather (entirely different concept though)
Bokura no micro na shuumatsu(English tile : End of the world with you) would be an amazing series to watch if you like Taikan yoho.

Both have MLs who have known and liked the other for a long time. If you watch one, you'll be like.. "Wow." I'm getting similar vibes...

Both dramas have similar vibes, where the male lead is a little jealous and domineering.
On the other hand, in both dramas the other male protagonist is more shy and adorable

Both have a ML who's liked the other for a longer period of time. Both have that inner dialogue and show scenes of how the other has come to fall for each other. Overall they give off similar vibes.

These two are Japanese dramas, and both have a very similar atmosphere that the film style brings.
Both are beautiful. I loved them from the first episode. Highly recommended.

Both are about former classmates where one offers the other to become roommates to focus better on their job. While the rent for the room is basically "Just do whatever I tell you" which might be house work or might be something else :)

Similar in the sense that both leads lived together before dating. But let's say that My Waether Man is more for mature audiance.