Thank you, Hachimitsu. This manga is an incredibly powerful story and I'm grateful that you've spread it to the world. It's been a fantastic run and congratulations for carrying it to the end!
Kazuya enjoyed a fair bit of development over the past few arcs, so I guess it's now Chizuru's turn. Let's hope Mami doesn't show up to cockblock her again
The best thing about vanillas like this is that the story shifts the focus from the shenanigans of "will they won't they" to the challenges of STAYING together in a relationship. There's so much unexplored avenues and scenarios for great storytelling.