The initial set up was the same between WN and the manga. It is explored later on, where Sasha wanted to pursue their og dream of "being the strongest team" because she sees it as her carrying Hyce in achieving that dream, and with that, hoped he would forgive the past. However, as we saw in the manga, Hyce outright rejected that notion, effectively closing the only door Sasha knows for any attempt to amend their relationship.It would have been nice to have seen what went on in Sasha's head when he told Myuane that he worked alone and when he asked her how it could be "our dream" when she was the only one living it. It seemed like those were major shocks to her. Was there anything about that in the Web/Light Novel? I really like seeing characters feeling anguish for what they've lost due to their bad decisions and actions, especially if it's from some type of betrayal (intentional or not).
He still goes independent, though he accepts others joining up. Later down the line, both Hyce and Sasha will clear quests together more often, both as pair or in a group.I'd like to hear more pls, does he get into a party without her or with her?
And if Sasha chose to move on without Hyce, the story would end right there
The premise of the manga is facing the ugly truth and how to proceed with such relationship moving forward. If Sasha moved on, then there will be nothing else to explore.