I love it when Watamote doujins get posted, they're always pretty good for the most part.
This one felt pretty well done, it doesn't feel OOC or outside of canon, it's like as if it could form part of the main story if the manga was nsfw and yuri. I hope there's a sequel tho, ending it like this is depressing, until that imma just think this was a prequel to Kokonoe Kazura like everyone else.
Also, Ucchi being supportive was really wholesome.