Recommendations

Both are currently airing shows with one of the main leads involved with the mafia. They are both crime/thrillers and have similar vibes.

- Childhood friends to lovers with (more than) a pinch of obsession on one side.
- One lead actively drives away others to stay the second lead's number one
- Height difference
- A good bit of banter between the leads

Forewarning to check tags if you are sensitive to any TWs!
The leads in Secret Lover are (seemingly) a lot more "friendly" (Dohyeon [in Summertime] comes across as a bit more "cold" in nature).
Secret Lover has some fake dating trope moments briefly where as Summertime does not.

Detective duo dynamic, leads bicker at first but bond and learn to work off of each other's strengths. Serial killer, police criminal investigations, intricate and thrilling plots. Wonderful characters.

Detective duo dynamic, intricate and thrilling plot. The leads bicker at first but work off of each other's strengths and learn from one another.

Both drama shows the process of how the female leads strive at work, getting achievements and obtaining love in the busy city.
Both male leads are capable in their respective industries.

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office/corporate settings in both
Chemistry hot in both.. only in FITYMI, there's banter between people of same status/value and ego.. in the early spring,for now,FL feels inferior.
And life lessons mostly is very present in FITYMI (there's a little in the early spring)

If you're hungry for another enormous historical canvas, this is the kind of thing I'd investigate next: dynastic politics, military campaigns and the formation of an empire rather than romance-first storytelling.

?? Romance: Low
? Emotional intensity: Emotional
? Tropes: Empire building • Warfare • Political struggle • Historical figures • Succession

If the wronged heroine + revenge + powerful allies aspect of Road to Splendor was your favorite, this one will hook you quickly. It's considerably more revenge-driven.
?? Romance: High
? Emotional Intensity: High
? Shared Tropes: Wronged heroine, second chance, revenge, political intrigue, dangerous ML

If you want more mature romance + political/military intrigue, go here. The leads become partners rather than simply a romance happening around the plot.
?? Romance: High
? Emotional Intensity: High
? Shared Tropes: Powerful couple, political marriage, court intrigue, military conflict

They are both high school youth romances that are friends to lovers. Both shows includes funny friendships

Both series have a person with an ability who helps out a cop. Both have a cheery/goofy character with the ability with a more strict cop who later gets more friendly with the ability character.
They both tackle cases together.
They just have the same vibe and are just great series!

Both the drama series and films shows parents who use their power to protect their children from being legally responsible for their crimes. Both position shows the impact of this decision on others.

Both are Thai
Both have evil spirits
Both have a lead with a supernatural ability
Both span the course of time

Both are Thai series
Both have a police genre
Both have a supernatural element
Both have a romantic theme where one of them has supernatural abilities