Author has a history of shitty endings if you look at their work history.
All of the comments in their past work's endings are people saying how bad the endings are.
Here are some examples:
https://forums.mangadex.org/threads/natsuki-kun-wa-kyou-mo-kirei-vol-1-ch-17-youre-hopeless.721722/...
The Pixiv raws seem pretty tame and cutesy so I doubt it we will see anything overly explicit.
Not even the fanbox has anything explicit, just cute previews of the chapters.
Aw I was late for the comments.
Though it seems it was mostly a chill slice of life chap, so there wasn't much hate bait for people to latch onto this time.