It's still a mystery how Riku was living on his own after his family death, no close relatives have been seen, even Ayana was living alone and Chiharu as a landlady.
Haruno came to her term and came back to be just friends, it's a shame there wasn't anyone, maybe Kana that could heal her broken heart.
Ayana is bothered by being the one in care, but she is giving it all by being by together with Riku.
Sure her trauma won't go away that easily, although how speedruning the story is, it was just almost a year, but their time spent together is the best gift for Riku.
They still don't know their landlady Chiharu is behind that doujinshi and believe it's Riku kink... oh this will be good...