https://myreadingmanga.info/seo-serina-aishitagari-w-darling-kr/3/ Found the raws but idk ...

Thanks for sharing, and I think the same it seems kinda boring. Typical big brother butts in to save but he's happy so he's going back and everything stays the same. It's not even really a threesome mostly it's 2 with someone adding themselve. I don't know how to explain but that how it feels to me.
the first chapter is way better than the others.