Those transparent curtains aren't hiding anything. The answer is "get caught flirting in the curtains."
Inevitable transformation of the medium due to new technology. This would never fly in a published paper magazine, but it could get a lot of clicks on a social media app. There's a broader question of should a manga site be sharing "web comics" or "anime girl ecchi illustrations," and I fall on the not-purist side. Why not? I like all three things so I'm happy to find them on one site.
one thing to note is that this got published as a book which is labeled manga, so yea, the nuance gets funky further since publishers are also a play (the "respect the author/publisher's words" vs "I will be the judge of it" that you see with tags or other aspects are always judged by flip-flop reasoning lol).
I will blame this "image sequences are manga" on tawawa on a monday's original doujin since it's this same format, but more speech bubbles in the full spread images, also the oldest one I know of.
But yea, in this, this manga is published as a manga in the book format of a manga, so I don't see why it wouldn't be here (tho it's probably more because of the comic style segments this gets)