It has obviously done.. (in my opinion, it should be)
I think there's nothing can be told..
it's happy ending for Nemu and Maya, that's it.
And no need to tell about Maya's cousin's story
Cz his part was minor, I think.. (Though he greatly affect Nemu's mother to accept Maya)
If needed, just separate them in a spin off (sekuel) manga
Not it is NOT and that's a fact :)
they release raw chapters but not on these manga sites but mostly in SOCIAL MEDIA like tumblr, fb twittter etc. since it's already licensed :) Right now, it continues on Nemu being possessive x'D and more scenes lol
Is this manga done already?