anyone complaining about the lack of "story", it being "bland/boring", has completely missed the point.
same for the peoples who read too much into/obsess to much over the nature of the couple's relationship.
you guys are all missing the point.
this is basically slice-of-life, and a really good one as well (as a hentai).
it's about two peoples, living together, going from complete strangers, to "married behaviour".
a young chick way too mature and lonely for her age, a guy extremely bored with nothing to look for in his life.
they live a boring life, they have fun whenever they're together, including a loooot of sex since both have high libidos,
and that's it, that's what it is about, this isn't anything with a "plot" or subtext.
it's not that deep or interesting, and it dosn't try, it's not what it's going for.
it'd be like complaining about a fighting-game not having enough management/simulation in it.
that's not what this is for, you're looking for the wrong thing.
but this manga IS very adorable, comfy, and it make you feel reaaaaal lonely, gawdamn.