@SID my experience from reading WN and LN, they can change the process and scenarios but they can't change the outcome. If A ended up with B, that's it. They can't change it from A x B to A x C. Tho it's different from WN/LN to anime adaptation. They can freely do what they want as long it's approved. Novel readers confirmed that it isn't much different from the novel tho they cut some important details in the manhwa so i doubt they'll make it different regarding who ended up with who in this series. The only possible change they can do is make it a harem ending.
I don't care about your taste!