It wasn't ever good, but like... Wow, the manga really just turned into "how about we just make everything suck and everyone miserable and unlikeable in every way" like I have to go read something else to mentally un-read this now. Maybe this is supposed to just be a "dark middle chapter" or something and if there were more chapters it wouldn't feel this deeply unpleasant but even then I think I probably would have dropped it after the most recent chapter.
-Parents divorced
-being forcibly separated from your sibling whom the parents were so okay with you being close to they let you share a room as teenagers in spite of a gender difference
-that same sibling is obviously changing a lot without you there
-your friend implies that sibling is going to date someone else and doesn't like you anymore
-that same friend berates you a bunch about you being hung up on all these events even though that's pretty fucking normal
-that same friend pressures you into sex so that you stop thinking about that sibling so much
-she also really seems to act like she doesn't actually have feelings for you the whole time too ("yes I would kiss someone else if they were sad," etc. etc. feels like there's no emotion behind it whatsoever but maybe that's a translation issue, idk)
Like what a series of miserable events to all happen in 2 chapters.