This Sweet and Splendid Story was in all likelihood brought to us, by the letter "S", which, among other things, is the first letter in the words: "Succubus", "Seduction", "Sexy" and "Submission". For the sake of the male protagonist, let's hope there's no need to mention the word: "Snu-Snu" (to which he's dangerously close to Succumbing).
That's certainly an interesting title. Also, definitely happy to see more releases featuring Succubi.
Still, I think it turned out nicely. Rather than just going along with it out of lust, he actually agreed after spending a bit of time talking with her and finding out she's actually quite a good girl.
Great ending though. Indeed, I'd say he hath released the true nature of a succubus that slept deep within her. I'm sure the coming days in his life will now periodically involve extended periods of time where he won't be able to move...
Hurray for more succubus goodness! Truly the MC has awaken a sleeping monster not a bad way to go out! Hopefully we can get a continuation of this story from the artist!