@miyako19 you're making a lot of assumptionsons on many fronts, but even so, true harem endings are very rare and it could be a potentially pleasant ending for this work. Even disregarding that, my comment included My desire for Nino as the only alternative but an alternative nonetheless.
I'm loving this. His guilt is still pulling him, but it's beginning to give way. And how could it not when she offers him such care, freedom, and understanding? I don't want to think about how it might end. I'll just enjoy this fun ride for now.