Just to add some context for the ending for the people that don't think this is yuri or any hard confirmaton.
Bear in mind that this series started in 2009; a period where hand holding is ACTUALLY lewd as much as people like to meme on it today. I remember reading like 90% of the stuff on this website back in highschool and any kind of romantic intimacy and or even confirmation of a romantic relationship was pretty rare. Any kind of kissing had lots of sex in it and was basically hentai. Yuri series/ doujinshi was either hentai or very teasy with the typical blushing and nothing more. The in between or what I like to think is the sweetspot, that is very common today was extremely rare.
Referencing a post from another series
Some guy mentioned in the comments section that I will quote "If both parties request to share a room, the declaration itself is equivalent to a 'confession'" with a link to this official tweet
No idea if it's true or not, I'm not Japanese nor do I understand the social culture that well, nor do I even speak or understand but I'll just take their word for it.
It's a relic from the past from a period completely different compared today. I actually stopped reading around chapter 30 or so because it rarely had any updates, so I decided to wait until it was completed (or at least caught up) and boy did I wait a while.... Thank you to all the scanlators that picked this series up!