This is where I found it, but there are other sites as well: https://hentaifc.com/e/63198/c0
So long that I've come back to this site. If not for the replies above, I wouldve not checked that my comment has garnered attention. So for anyone who are curious about the "Spy Who Ravished Me~ Reborn as a Mafia Princess in a Deadly Game~" , head to the *WARNING*. The ML is a Yandere, so it goes to say that this contains Non/Dubious Con. So if you don't like, don't read. And if it is otherwise, you can check the author's other works as well which leans towards to Yandere ML's. Anyways, if you are someone who can check it through smut lenses, the author is good.
So many smut in this world that were simply forgettable... BUT THIS RIGHT HERE shall be added to my SSS Ultra Top Tier Smut + Plot + Great Art (Straight Couple Edition)
Lady K and the Sick Man
The Spy Who Ravished Me~ Reborn as a Mafia Princess in a Deadly Game~
Madoka Exorcist (added just rn)
I'm still finding more... It's a pity that one must have to find such Rare Gems in a sea of trash smuts... and subject oneself to traumatic things amidst checking if the contents of said smuts are great only to be fooled that it was indeed--- trash smut. Thank you January 2024 that I have found this manga. I have to scour the internet for months until i found this one!