What you've missed is that this is mostly a Slice of Life manga. The previous chapters were all SoL stuff and just meant to be cute. This is one of those "cute with a side of plot" types where the IS story and stuff, it's just not necessarily the main focus.Just saw this on main page. Read first chapter. Read this chapter. Feels like skipped nothing critical.
So, next step for them is to make love while she is in magical girl form, right?