
I'm not sure with the pairings, coz the prince was in love with Jinsoo and not the real maythan. While duke was in love with the real maythan before and I'm not sure if he falls in-love again with 2nd maythan (Jinsoo). If there's really a life stone aside from Fate stone, and they will resurrect the real maythan then it would be Duke&Real Maythan and Prince&Jinsoo. But well from the current raw chapters, it's easy to tell that the duke is the endgame

As I said it was a hypothesis from a while back when duke was going around to find the stone. At that point he didn’t mention that he met ogMaythan.
I just took it from that comment.
I made another hypothesis where I mentioned "WHAT IF" Maythan is actually ogMaythan and his memory was sealed and it his third life?

You really didn’t get my point.
I went over lot of hypothesis here. And I didn’t make this hypothesis from recent chapters. Those are from a while back when they initially talked about fate stone. Maythan was trying to find the fate stone to go back to his world whereas duke trying find it for some Unknown reason (at that time he didn’t mention why he was trying to find it. It was way later he talked about his power to Maythan and their childhood days).
And after duke bring the childhood stories, I came up with another hypothesis where ogMaythan and the MC are the same people and by third life I meant to say his current life is actually his third life. His first life is as a villain Maythan and second life in a modern world and the third life is current life where he doesn’t remember his first life.
And my hypothesis wouldn’t align as I am not making any hypothesis from a recent chapters. It was a mix of S1 and beginning of s2 chapters.
I was hoping for a plot twist that I talked a few chapters back.
I thought duke is also from another world, possibly MC's world as he was finding life stone or something like that. Thought MC would find about it and talk to duke about how they transmigrated. And he & his useless sister with duke would find the stone and make a wish to go back. And they would talk about their Secret to other members. And go back to their original world and Maythan would start dating the duke in their world. On the other hand, ogMaythan will come back to his original body as his soul was actually dormant rather than dead. And the depressed prince and ogMaythan will actually fall in love after talking about their struggle. And our baby gurls will finally tie the knot and the wolfie will find someone to spend his life. Don't care about what happened to that idiot sister.
Side note: One chapter mention the duke disappeared in the middle of the game. Possibly, he actually found the stone and used it. As the stone has a lot power to transmigrate, upon using it, it created an alternate universe where Mc and his sister travelled. And ogMaythan's soul dormant with his past memories (possibly something to do with his unique ability)
Opinion: This story needn't a villain.